Differentiating Hashimoto's thyroiditis from other diseases: Difference between revisions

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Revision as of 16:16, 5 October 2017

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

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

Differentiating Hashimoto's Thyroiditis from other Diseases

Differentiating Hashimoto's thyroiditis from other causes of thyroiditis

Hashimoto's thyroiditis must be differentiated from other causes of thyroiditis, such as De Quervain's thyroiditis, Riedel's thyroiditis, and suppurative thyroiditis.^[1]

Conditions	Causes	Age at onset	Pathological findings	Diagnostic approach
Hashimoto's thyroiditis	Autoimmune	All ages, peak at 30-50	Lymphocytic infiltration Germinal centers Fibrosis (in some variants)	Increased TSH (hypothyroidism) TPO antibodies present in high titer I-123 uptake usually decreased
Painful subacute (De Quervain's) thyroiditis	Unknown	20-60	Giant cells Granulomas	Increased TSH (hypothyroidism) and/or Decreased TSH (Thyrotoxicosis) TPO antibodies absent or very low titer I-123 uptake decreased
Silent thyroiditis	Autoimmune	All ages, peak at 30-40	Lymphocytic infiltration Lymphoid follicles	Increased TSH (hypothyroidism) and/or Decreased TSH (transient hypothyroidism) TPO antibodies present in high titer I-123 uptake usually decreased
Postpartum thyroiditis	Autoimmune	Childbearing age	Lymphocytic infiltration	Increased TSH (hypothyroidism) and/or Decreased TSH (transient hypothyroidism) TPO antibodies present in high titer I-123 uptake usually decreased
Riedel's thyroiditis	Unknown	30-60	Dense fibrosis	Normal TSH (euthyroidism) TPO antibodies usually present I-123 uptake decreased or normal
Suppurative thyroiditis	Infection	Children, 20-40	Abscess formation	Normal TSH (euthyroidism) TPO antibodies absent I-123 uptake normal

Differentiating Hashimoto's thyroiditis from other causes of hypothyroidism

Hashimoto's thyroiditis must be differentiated from other causes of hypothyroidism on the basis of history and symptoms and laboratory findings:^[2]^[3]^[1]^[4]^[5]^[6]

Disease		History and symptoms		Laboratory findings							Additional findings
Disease		Fever	Pain	TSH	Free T4	T3	T3RU†	Thyroglobin	TRH	TPOAb^	Additional findings
Primary hypothyroidism	Autoimmune (Hashimoto's thyroiditis)	-	-	↑*	↓	Normal/↓	Normal/↓	Normal/↑	Normal	Present (high titer)	May be accompanied by other autoimmune diseases
	Riedel's thyroiditis	-	-	Normal/↑	Normal/↓	Normal/↓	Normal/↓	Normal	Normal	Usually present	Riedel's thyroiditis usually presents with hard and fixed thyroid mass.
	Infectious thyroiditis	+	+	Normal	Normal	Normal	Normal	Normal	Normal	Absent	Infectious thyroiditis associated with neck pain
Transient hypothyroidism	Subacute (de Quervain's) thyroiditis	+/-	+/-	↑/↓	↓/↑	Normal	↓	↑	Normal	Low/absent	May present primarily with hyperthyroidism
	Postpartum thyroiditis	+/-	+/-	↑/↓	↓/↑	Normal	↓	↑	Normal/↑	Present (high titer)	May present primarily with hyperthyroidism
	Silent thyroiditis	-	-	↑/↓	↓/↑	Normal	↓	↑	Normal	Present (high titer)	May present primarily with hyperthyroidism
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.

Differentiating Hashimoto's thyroiditis from other causes of thyrotoxicosis

Disease		History and symptoms		Laboratory findings							Additional findings
Disease		Fever	Pain	TSH	Free T4	T3	T3RU†	Thyroglobin	TRH	TSH Receptor Antibody	Additional findings
Primary hyperthyroidism	Grave's disease	-	-	↓	↑	Normal/↑	↑	↑	Normal	Present	Patient may have opthalmopathy and dermopathy
Primary hyperthyroidism	Toxic thyroid nodule	-	-	↓	↑	Normal/↑	↑(hot nodule)	Normal/↑	Normal	Absent	-
Secondary hyperthyroidism	Pituitary adenoma	-	-	↑	↑	Normal/↑	↑	Normal/↑	Normal	Absent	Inappropriately normal or increased TSH
Tertiary hyperthyroidism	Tertiary hyperthyroidism	-	-	↑	↑	↑	↑	Normal/↑	↑	Absent	Inappropriately normal or increased TSH
Drug induced	Amiodarone type 1	-	-	↓	↑	Normal/↑	↓	Normal/↑	Normal	Absent	High urinary iodine
Drug induced	Amiodarone type 2	-	-	↓	↑	Normal/↑	Absent/↓	Normal/↑	Normal	Absent	High urinary iodine
Others	Factitious thyrotoxicosis	-	-	↓	↑	Normal/↑	↓	↓	Normal	Absent	Decreased thyroglobulin
	Trophoblastic disease	-	-	↓	↑	Normal/↑	↑	-	Normal	Absent	-
	Struma Ovari	-	-	↓	↑	Normal/↑	↓	-	Normal	Absent	-

Cause of thyrotoxicosis	TSH receptor antibodies	Thyroid US	Color flow Doppler	Radioactive iodine uptake/Scan	Other features
Graves' disease	+	Hypoechoic pattern	↑	↑	Ophthalmopathy, dermopathy, acropachy
Toxic nodular goiter	-	Multiple nodules	-	Hot nodules at thyroid scan	-
Toxic adenoma	-	Single nodule	-	Hot nodule	-
Subacute thyroiditis	-	Heterogeneous hypoechoic areas	Reduced/absent flow	↓	Neck pain, fever, and elevated inflammatory index
Painless thyroiditis	-	Hypoechoic pattern	Reduced/absent flow	↓	-
Amiodarone induced thyroiditis-Type 1	-	Diffuse or nodular goiter	↓/Normal/↑	↓ but higher than in Type 2	High urinary iodine
Amiodarone induced thyroiditis-Type 2	-	Normal	Absent	↓/absent	High urinary iodine
Central hyperthyroidism	-	Diffuse or nodular goiter	Normal/↑	↑	Inappropriately normal or high TSH
Trophoblastic disease	-	Diffuse or nodular goiter	Normal/↑	↑	-
Factitious thyrotoxicosis	-	Variable	Reduced/absent flow	↓	↓ Serum thyroglobulin
Struma ovarii	-	Variable	Reduced/absent flow	↓	Abdominal RAIU

References

↑ ^1.0 ^1.1 "Thyroiditis — NEJM".
↑ Bindra A, Braunstein GD (2006). "Thyroiditis". Am Fam Physician. 73 (10): 1769–76. PMID 16734054.
↑ McDermott MT (2009). "In the clinic. Hypothyroidism". Ann. Intern. Med. 151 (11): ITC61. doi:10.7326/0003-4819-151-11-200912010-01006. PMID 19949140.
↑ 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.
↑ Lania A, Persani L, Beck-Peccoz P (2008). "Central hypothyroidism". Pituitary. 11 (2): 181–6. doi:10.1007/s11102-008-0122-6. PMID 18415684.
↑ 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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[urlThyroiditis_—_NEJM-1] 1.0 ^1.1 "Thyroiditis — NEJM".

[pmid16734054-2] Bindra A, Braunstein GD (2006). "Thyroiditis". Am Fam Physician. 73 (10): 1769–76. PMID 16734054.

[pmid19949140-3] McDermott MT (2009). "In the clinic. Hypothyroidism". Ann. Intern. Med. 151 (11): ITC61. doi:10.7326/0003-4819-151-11-200912010-01006. PMID 19949140.

[pmid18177256-4] 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.

[pmid18415684-5] Lania A, Persani L, Beck-Peccoz P (2008). "Central hypothyroidism". Pituitary. 11 (2): 181–6. doi:10.1007/s11102-008-0122-6. PMID 18415684.

[pmid25905413-6] 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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 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Present
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-* May be accompanied by other [[autoimmune diseases]]
+* Patient may have opthalmopathy and dermopathy
 |-
 | align="center" style="background:#DCDCDC;" |[[Toxic thyroid nodule]]
@@ Line 282: / Line 282: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-*[[Riedel's thyroiditis]] usually presents with hard and fixed thyroid mass.
+-
 |-
 | rowspan="1" style="background:#DCDCDC;" |[[Secondary hyperthyroidism]]
@@ Line 296: / Line 296: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-*May present primarily with [[hyperthyroidism]]
+*Inappropriately normal or increased TSH
 |-
 | rowspan="1" style="background:#DCDCDC;" |[[Tertiary hyperthyroidism]]
@@ Line 310: / Line 310: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-*May present primarily with [[hyperthyroidism]]
+*Inappropriately normal or increased TSH
 |-
 | rowspan="2" style="background:#DCDCDC;" |Drug induced
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 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-* May be accompanied by other [[autoimmune diseases]]
+*High urinary iodine
 |-
 | align="center" style="background:#DCDCDC;" |[[Amiodarone type 2]]
@@ Line 337: / Line 337: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-*[[Riedel's thyroiditis]] usually presents with hard and fixed thyroid mass.
+*High urinary iodine
 |-
 | rowspan="3" style="background:#DCDCDC;" |Others
@@ Line 351: / Line 351: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-* May be accompanied by other [[autoimmune diseases]]
+*Decreased thyroglobulin
 |-
 | align="center" style="background:#DCDCDC;" |[[Trophoblastic disease]]
@@ Line 364: / Line 364: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-* May be accompanied by other [[autoimmune diseases]]
+-
 |-
 | align="center" style="background:#DCDCDC;" |[[Struma Ovari]]
@@ Line 377: / Line 377: @@
 | align="center" style="padding: 5px 5px; background: #F5F5F5;" |Absent
 | align="left" style="padding: 5px 5px; background: #F5F5F5;" |
-*[[Riedel's thyroiditis]] usually presents with hard and fixed thyroid mass.
+-
 |-
 |}