Riedel's thyroiditis differential diagnosis: Difference between revisions

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__NOTOC__
__NOTOC__
{{Riedel's thyroiditis}}
[[Image:Home_logo1.png|right|250px|link=http://www.wikidoc.org/index.php/Riedel%27s_thyroiditis]]
{{CMG}}; {{AE}}  
{{CMG}} {{AE}} {{MMF}}


==Overview==
==Overview==
*[Disease name] must be differentiated from other diseases that cause [clinical feature 1], [clinical feature 2], and [clinical feature 3], such as [differential dx1], [differential dx2], and [differential dx3].
Riedel's thyroiditis must be differentiated from other causes of [[thyroiditis]], such as [[De Quervain's thyroiditis]], [[Hashimoto's thyroiditis]], [[Riedel's thyroiditis]], and suppurative thyroiditis.
*[Disease name] must be differentiated from [[differential dx1], [differential dx2], and [differential dx3].
==Differentiating Riedel's Thyroiditis from other Diseases==
*Riedel's thyroiditis must be differentiated from other causes of [[thyroiditis]], such as [[De Quervain's thyroiditis]], [[Hashimoto's thyroiditis]], [[Riedel's thyroiditis]], and suppurative thyroiditis.<ref name="urlThyroiditis — NEJM">{{cite web |url=http://www.nejm.org/doi/full/10.1056/NEJMra021194 |title=Thyroiditis — NEJM |format= |work= |accessdate=}}</ref>
{| align="center"
|-
|}
{| style="border: 0px; font-size: 90%; margin: 3px;" align="center"
! style="background:#4479BA; color: #FFFFFF;" | Conditions
! style="background:#4479BA; color: #FFFFFF;" |Causes
! style="background:#4479BA; color: #FFFFFF;" |Age at onset
! style="background:#4479BA; color: #FFFFFF;" |Pathological findings
! style="background:#4479BA; color: #FFFFFF;" |Diagnostic findings   
|-
| align="center" style="background:#DCDCDC;" |[[Riedel's thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Unknown
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*30-60
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Dense fibrosis
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Normal TSH]] (euthyroidism)
*[[Thyroid peroxidase|TPO antibodies]] usually present
*[[I-123 thyroid imaging|I-123]] uptake decreased or normal
|-
| align="center" style="background:#DCDCDC;" |[[Hashimoto's thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Autoimmunity|Autoimmune]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*All ages, peak at 30-50
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Lymphocytic infiltration
*[[Germinal center|Germinal centers]]
*[[Fibrosis]] (in some variants)
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Increased TSH]] ([[hypothyroidism]])
*[[Thyroid peroxidase|TPO antibodies]] present in high titer
*[[I-123 thyroid imaging|I-123]] uptake usually decreased
|-
| align="center" style="background:#DCDCDC;" |[[De Quervain's thyroiditis|Painful subacute (De Quervain's) thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Unknown
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*20-60
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Giant cells
*[[Granuloma|Granulomas]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Increased TSH]] ([[hypothyroidism]]) and/or
* [[Thyroid function tests|Decreased TSH]] ([[Hyperthyroidism|Thyrotoxicosis]])
*[[Thyroid peroxidase|TPO antibodies]] absent or very low titer
*[[I-123 thyroid imaging|I-123]] uptake decreased
|-
| align="center" style="background:#DCDCDC;" |[[Silent thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Autoimmunity|Autoimmune]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*All ages, peak at 30-40
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Lymphocytic infiltration
*Lymphoid follicles
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Increased TSH]] ([[hypothyroidism]]) and/or
* [[Thyroid function tests|Decreased TSH]] (transient [[hypothyroidism]])
*[[Thyroid peroxidase|TPO antibodies]] present in high titer
*[[I-123 thyroid imaging|I-123]] uptake usually decreased
|-
| align="center" style="background:#DCDCDC;" |[[Postpartum thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Autoimmunity|Autoimmune]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Childbearing age
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Lymphocytic infiltration
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Increased TSH]] (hypothyroidism) and/or
* [[Thyroid function tests|Decreased TSH]] (transient hypothyroidism)
*[[Thyroid peroxidase|TPO antibodies]] present in high titer
*[[I-123 thyroid imaging|I-123]] uptake usually decreased
|-
| align="center" style="background:#DCDCDC;" |[[Suppurative thyroiditis]]
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Infection
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*Children, 20-40
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Abscess]] formation
| style="padding: 5px 5px; background: #F5F5F5;" align="left" |
*[[Thyroid function tests|Normal TSH]] (euthyroidism)
*[[Thyroid peroxidase|TPO antibodies]] absent
*[[I-123 thyroid imaging|I-123]] uptake normal
|}


==Differentiating X from other Diseases==
*Riedel's thyroiditis must be differentiated from other causes of [[hypothyroidism]] on the basis of history and symptoms and laboratory findings:<ref name="pmid16734054">{{cite journal |vauthors=Bindra A, Braunstein GD |title=Thyroiditis |journal=Am Fam Physician |volume=73 |issue=10 |pages=1769–76 |year=2006 |pmid=16734054 |doi= |url=}}</ref><ref name="pmid19949140">{{cite journal |vauthors=McDermott MT |title=In the clinic. Hypothyroidism |journal=Ann. Intern. Med. |volume=151 |issue=11 |pages=ITC61 |year=2009 |pmid=19949140 |doi=10.7326/0003-4819-151-11-200912010-01006 |url=}}</ref><ref name="urlThyroiditis — NEJM">{{cite web |url=http://www.nejm.org/doi/full/10.1056/NEJMra021194 |title=Thyroiditis — NEJM |format= |work= |accessdate=}}</ref><ref name="pmid18177256">{{cite journal |vauthors=Aoki Y, Belin RM, Clickner R, Jeffries R, Phillips L, Mahaffey KR |title=Serum TSH and total T4 in the United States population and their association with participant characteristics: National Health and Nutrition Examination Survey (NHANES 1999-2002) |journal=Thyroid |volume=17 |issue=12 |pages=1211–23 |year=2007 |pmid=18177256 |doi=10.1089/thy.2006.0235 |url=}}</ref><ref name="pmid18415684">{{cite journal |vauthors=Lania A, Persani L, Beck-Peccoz P |title=Central hypothyroidism |journal=Pituitary |volume=11 |issue=2 |pages=181–6 |year=2008 |pmid=18415684 |doi=10.1007/s11102-008-0122-6 |url=}}</ref><ref name="pmid25905413">{{cite journal |vauthors=De Groot LJ, Chrousos G, Dungan K, Feingold KR, Grossman A, Hershman JM, Koch C, Korbonits M, McLachlan R, New M, Purnell J, Rebar R, Singer F, Vinik A, Stockigt J |title=Clinical Strategies in the Testing of Thyroid Function |journal= |volume= |issue= |pages= |year= |pmid=25905413 |doi= |url=}}</ref>
*[Disease name] must be differentiated from other diseases that cause [clinical feature 1], [clinical feature 2], and [clinical feature 3], such as [differential dx1], [differential dx2], and [differential dx3].
*[Disease name] must be differentiated from [[differential dx1], [differential dx2], and [differential dx3].


*As [disease name] manifests in a variety of clinical forms, differentiation must be established in accordance with the particular subtype. [Subtype name 1] must be differentiated from other diseases that cause [clinical feature 1], such as [differential dx1] and [differential dx2]. In contrast, [subtype name 2] must be differentiated from other diseases that cause [clinical feature 2], such as [differential dx3] and [differential dx4].
{| class="wikitable" align="center" style="border: 0px; margin: 3px;"
 
! colspan="2" rowspan="2" align="center" style="background: #4479BA; color: #FFFFFF; " |Disease
===Preferred Table===
! colspan="2" align="center" style="background: #4479BA; color: #FFFFFF; " |History and symptoms
{|
! colspan="7" align="center" style="background: #4479BA; color: #FFFFFF; " |Laboratory findings
|-style="background: #4479BA; color: #FFFFFF; text-align: center;"
! rowspan="2" align="center" style="background: #4479BA; color: #FFFFFF; " |Additional findings
! rowspan="2" |Diseases
|-
! colspan="4" |Laboratory Findings
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> Fever 
! colspan="4" |Physical Examination
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> Pain
! colspan="4" |History and Symptoms
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> TSH
! rowspan="2" |Other Findings
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> Free T4
|-style="background: #4479BA; color: #FFFFFF; text-align: center;"
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> T3
!Lab Test 1
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> T3RU<small><sup>†</sup>
!Lab Test 2
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> Thyroglobin
!Lab Test 3
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> TRH
!Lab Test 4
! align="center" style="background: #4479BA; color: #FFFFFF; " |<small> TPOAb<sup>^</sup>
!Physical Finding 1
|-
!Physical Finding 2
| rowspan="3" style="background:#DCDCDC;" |[[Primary hypothyroidism]]
!Physical Finding 3
| align="center" style="background:#DCDCDC;" |[[Riedel's thyroiditis]]
!Physical Finding 4
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
!Finding 1
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
!Finding 2
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↑
!Finding 3
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↓
!Finding 4
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↓
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↓
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Usually present
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
*[[Riedel's thyroiditis]] usually presents with hard and fixed thyroid mass.
|-
| align="center" style="background:#DCDCDC;" |[[Hashimoto's thyroiditis|Autoimmune]] ([[Hashimoto's thyroiditis]])
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑'''<small>*
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''''↓'''''
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/'''''↓'''''
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↓
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/'''↑'''
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Present (high titer)
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
* May be accompanied by other [[autoimmune diseases]]
|-
| align="center" style="background:#DCDCDC;" |[[Thyroiditis|Infectious thyroiditis]]
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
*[[Thyroiditis|Infectious thyroiditis]] associated with [[neck pain]]
|-
|-
|style="background: #DCDCDC; padding: 5px; text-align: center;" |Differential Diagnosis 1
| rowspan="3" style="background:#DCDCDC;" |[[Hypothyroidism|Transient hypothyroidism]]
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="background:#DCDCDC;" |[[De Quervain's thyroiditis|Subacute (de Quervain's) thyroiditis]]
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +/-
|style="background: #F5F5F5; padding: 5px;" |<nowiki>+</nowiki>
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +/-
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑/'''↓
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |↓/'''↑'''
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
| style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Low/absent
|style="background: #F5F5F5; padding: 5px;" |
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
*May present primarily with [[hyperthyroidism]]
|style="background: #F5F5F5; padding: 5px;" |
|-
|-
|style="background: #DCDCDC; padding: 5px; text-align: center;" |Differential Diagnosis 2
| align="center" style="background:#DCDCDC;" |[[Postpartum thyroiditis]]
|style="background: #F5F5F5; padding: 5px;" |'''↑'''
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +/-
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | +/-
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑/'''
|style="background: #F5F5F5; padding: 5px;" |-
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |↓/'''↑'''
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/↑
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Present (high titer)
| style="background: #F5F5F5; padding: 5px;" |
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
*May present primarily with [[hyperthyroidism]]
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|-
|-
|style="background: #DCDCDC; padding: 5px; text-align: center;" |Differential Diagnosis 3
| align="center" style="background:#DCDCDC;" |[[Silent thyroiditis]]
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑/'''↓
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |↓/'''↑'''
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Present (high titer)
|style="background: #F5F5F5; padding: 5px;" |
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
*May present primarily with [[hyperthyroidism]]
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|-
|-
|style="background: #DCDCDC; padding: 5px; text-align: center;" |Differential Diagnosis 4
| rowspan="8" style="background:#DCDCDC;" |Others
|style="background: #F5F5F5; padding: 5px;" |
| align="center" style="background:#DCDCDC;" |Drug-induced
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑'''/↓
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''''↓'''''/↑
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/'''↑'''
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent**
|style="background: #F5F5F5; padding: 5px;" |
| rowspan="5" align="left" style="padding: 5px 5px; background: #F5F5F5;" |
|style="background: #F5F5F5; padding: 5px;" |
* History of [[hyperthyroidism]]
|style="background: #F5F5F5; padding: 5px;" |
* History of trauma
*History of drug use, surgery, or radiation
|-
|-
|style="background: #DCDCDC; padding: 5px; text-align: center;" |Differential Diagnosis 5
| align="center" style="background:#DCDCDC;" |Radiation-induced
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|style="background: #F5F5F5; padding: 5px;" |
|}
 
===Use if the above table can not be made===
{| style="border: 0px; font-size: 90%; margin: 3px; width: 1000px" align=center
|valign=top|
|+
! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Differential Diagnosis}}
! style="background: #4479BA; width: 300px;" | {{fontcolor|#FFF|Similar Features}}
! style="background: #4479BA; width: 300px;" | {{fontcolor|#FFF|Differentiating Features}}
|-
|-
| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold; text-align:center;"|Differential 1
| align="center" style="background:#DCDCDC;" |Trauma induced
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
|-
|-
| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold; text-align:center;"|Differential 2
| align="center" style="background:#DCDCDC;" |[[Iodine-131|Radioiodine]] induced
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
|-
|-
| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold; text-align:center;"|Differential 3
| align="center" style="background:#DCDCDC;" |Thyroidectomy
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
|-
|-
| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold; text-align:center;"|Differential 4
| align="center" style="background:#DCDCDC;" |Subclinical [[hypothyroidism]]
| style="padding: 5px 5px; background: #F5F5F5;"|
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].
| align="center" style="padding: 5px 5px; background: #F5F5F5;" | -
| style="padding: 5px 5px; background: #F5F5F5;"|
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |'''↑'''
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal
| align="center" style="padding: 5px 5px; background: #F5F5F5;" |Normal/'''↑'''
| align="left" style="padding: 5px 5px; background: #F5F5F5;" |
* Asymptomatic
|-
|-
| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold; text-align:center;"|Differential 5
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].
| style="padding: 5px 5px; background: #F5F5F5;"|
* On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
|}
|}
<br style="clear:left" />''†: T3RU; Triiodothyronine Resin uptake''
''^: TPOAb; [[Thyroid peroxidase]] antibodies''
''*: [[TSH]] may be decreased transiently in the [[thyrotoxicosis]]''
''**: TPOAb may be present in drug-induced [[Hypothyroidism|hypo]]/[[hyperthyroidism]] such as [[Interferon-alpha]], [[Interleukin 2|interleukin-2]], and [[lithium]].''


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


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[[Category:Medicine]]
[[Category:Endocrinology]]
[[Category:Up-To-Date]]

Latest revision as of 00:01, 30 July 2020

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Furqan M M. M.B.B.S[2]

Overview

Riedel's thyroiditis must be differentiated from other causes of thyroiditis, such as De Quervain's thyroiditis, Hashimoto's thyroiditis, Riedel's thyroiditis, and suppurative thyroiditis.

Differentiating Riedel's Thyroiditis from other Diseases

Conditions Causes Age at onset Pathological findings Diagnostic findings
Riedel's thyroiditis
  • Unknown
  • 30-60
  • Dense fibrosis
Hashimoto's thyroiditis
  • All ages, peak at 30-50
Painful subacute (De Quervain's) thyroiditis
  • Unknown
  • 20-60
Silent thyroiditis
  • All ages, peak at 30-40
  • Lymphocytic infiltration
  • Lymphoid follicles
Postpartum thyroiditis
  • Childbearing age
  • Lymphocytic infiltration
Suppurative thyroiditis
  • Infection
  • Children, 20-40
Disease History and symptoms Laboratory findings Additional findings
Fever Pain TSH Free T4 T3 T3RU Thyroglobin TRH TPOAb^
Primary hypothyroidism Riedel's thyroiditis - - Normal/↑ Normal/↓ Normal/↓ Normal/↓ Normal Normal Usually present
Autoimmune (Hashimoto's thyroiditis) - - * Normal/ Normal/↓ Normal/ Normal Present (high titer)
Infectious thyroiditis + + Normal Normal Normal Normal Normal Normal Absent
Transient hypothyroidism Subacute (de Quervain's) thyroiditis +/- +/- ↑/ ↓/ Normal Normal Low/absent
Postpartum thyroiditis +/- +/- ↑/ ↓/ Normal Normal/↑ Present (high titer)
Silent thyroiditis - - ↑/ ↓/ Normal Normal Present (high titer)
Others Drug-induced - - /↓ /↑ Normal Normal/ Normal Absent**
  • History of hyperthyroidism
  • History of trauma
  • History of drug use, surgery, or radiation
Radiation-induced
Trauma induced
Radioiodine induced
Thyroidectomy
Subclinical hypothyroidism - - Normal Normal Normal Normal Normal Normal/
  • Asymptomatic


†: T3RU; Triiodothyronine Resin uptake

^: TPOAb; Thyroid peroxidase antibodies

*: TSH may be decreased transiently in the thyrotoxicosis

**: TPOAb may be present in drug-induced hypo/hyperthyroidism such as Interferon-alpha, interleukin-2, and lithium.


References

  1. 1.0 1.1 "Thyroiditis — NEJM".
  2. Bindra A, Braunstein GD (2006). "Thyroiditis". Am Fam Physician. 73 (10): 1769–76. PMID 16734054.
  3. McDermott MT (2009). "In the clinic. Hypothyroidism". Ann. Intern. Med. 151 (11): ITC61. doi:10.7326/0003-4819-151-11-200912010-01006. PMID 19949140.
  4. Aoki Y, Belin RM, Clickner R, Jeffries R, Phillips L, Mahaffey KR (2007). "Serum TSH and total T4 in the United States population and their association with participant characteristics: National Health and Nutrition Examination Survey (NHANES 1999-2002)". Thyroid. 17 (12): 1211–23. doi:10.1089/thy.2006.0235. PMID 18177256.
  5. Lania A, Persani L, Beck-Peccoz P (2008). "Central hypothyroidism". Pituitary. 11 (2): 181–6. doi:10.1007/s11102-008-0122-6. PMID 18415684.
  6. De Groot LJ, Chrousos G, Dungan K, Feingold KR, Grossman A, Hershman JM, Koch C, Korbonits M, McLachlan R, New M, Purnell J, Rebar R, Singer F, Vinik A, Stockigt J. "Clinical Strategies in the Testing of Thyroid Function". PMID 25905413.

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