Diffuse esophageal spasm differential diagnosis: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Diffuse esophageal spasm}} | [[Image:Home_logo1.png|right|250px|link=https://www.wikidoc.org/index.php/Diffuse_esophageal_spasm]] | ||
{{CMG}}; {{AE}}{{MSI}} | |||
==Overview== | |||
Diffuse esophageal spasm must be differentiated from other [[diseases]] that cause [[dysphagia]], [[chest pain]] and [[weight loss]] such as [[Angina|angina,]] [[reflux esophagitis]], [[esophageal carcinoma]], [[systemic sclerosis]], [[esophageal spasm|nutcracker esophagus]], [[hypertensive LES]], [[Esophageal web|esophageal web/stricture]], [[pseudoachalasia]], [[stroke]], [[esophageal candidiasis]] and [[Chagas disease]] etc. | |||
==Differential Diagnosis== | |||
Diffuse esophageal spasm must be differentiated from other diseases that cause [[dysphagia]], [[chest pain]] and [[weight loss]] such as [[Angina|angina,]] [[reflux esophagitis]], [[esophageal carcinoma]], [[systemic sclerosis]], [[esophageal spasm|nutcracker esophagus]], [[hypertensive LES]], [[Esophageal web|esophageal web/stricture]], [[pseudoachalasia]], [[stroke]], [[esophageal candidiasis]] and [[Chagas disease]] etc.<ref>{{cite book | last = Ferri | first = Fred | title = Ferri's clinical advisor 2015 : 5 books in 1 | publisher = Elsevier/Mosby | location = Philadelphia, PA | year = 2015 | isbn = 978-0323083751 }}</ref><ref name="pmid23871090">{{cite journal| author=Boeckxstaens GE, Zaninotto G, Richter JE| title=Achalasia. | journal=Lancet | year= 2013 | volume= | issue= | pages= | pmid=23871090 | doi=10.1016/S0140-6736(13)60651-0 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23871090 }}</ref><ref name="pmid25133039">{{cite journal |vauthors=Badillo R, Francis D |title=Diagnosis and treatment of gastroesophageal reflux disease |journal=World J Gastrointest Pharmacol Ther |volume=5 |issue=3 |pages=105–12 |year=2014 |pmid=25133039 |pmc=4133436 |doi=10.4292/wjgpt.v5.i3.105 |url=}}</ref><ref name="pmid24834141">{{cite journal |vauthors=Napier KJ, Scheerer M, Misra S |title=Esophageal cancer: A Review of epidemiology, pathogenesis, staging workup and treatment modalities |journal=World J Gastrointest Oncol |volume=6 |issue=5 |pages=112–20 |year=2014 |pmid=24834141 |pmc=4021327 |doi=10.4251/wjgo.v6.i5.112 |url=}}</ref><ref name="pmid28943381">{{cite journal |vauthors=Matsuura H |title=Diffuse Esophageal Spasm: Corkscrew Esophagus |journal=Am. J. Med. |volume= |issue= |pages= |year=2017 |pmid=28943381 |doi=10.1016/j.amjmed.2017.08.041 |url=}}</ref><ref name="pmid1736462">{{cite journal |vauthors=Lassen JF, Jensen TM |title=[Corkscrew esophagus] |language=Danish |journal=Ugeskr. Laeg. |volume=154 |issue=5 |pages=277–80 |year=1992 |pmid=1736462 |doi= |url=}}</ref><ref name="pmid17227515">{{cite journal |vauthors=Ruigómez A, García Rodríguez LA, Wallander MA, Johansson S, Eklund S |title=Esophageal stricture: incidence, treatment patterns, and recurrence rate |journal=Am. J. Gastroenterol. |volume=101 |issue=12 |pages=2685–92 |year=2006 |pmid=17227515 |doi=10.1111/j.1572-0241.2006.00828.x |url=}}</ref><ref name="pmid25013392">{{cite journal |vauthors=Shami VM |title=Endoscopic management of esophageal strictures |journal=Gastroenterol Hepatol (N Y) |volume=10 |issue=6 |pages=389–91 |year=2014 |pmid=25013392 |pmc=4080876 |doi= |url=}}</ref><ref name="pmid11753173">{{cite journal |vauthors=López Rodríguez MJ, Robledo Andrés P, Amarilla Jiménez A, Roncero Maíllo M, López Lafuente A, Arroyo Carrera I |title=Sideropenic dysphagia in an adolescent |journal=J. Pediatr. Gastroenterol. Nutr. |volume=34 |issue=1 |pages=87–90 |year=2002 |pmid=11753173 |doi= |url=}}</ref><ref name="pmid4449772">{{cite journal |vauthors=Chisholm M |title=The association between webs, iron and post-cricoid carcinoma |journal=Postgrad Med J |volume=50 |issue=582 |pages=215–9 |year=1974 |pmid=4449772 |pmc=2495558 |doi= |url=}}</ref><ref name="pmid1192404">{{cite journal |vauthors=Larsson LG, Sandström A, Westling P |title=Relationship of Plummer-Vinson disease to cancer of the upper alimentary tract in Sweden |journal=Cancer Res. |volume=35 |issue=11 Pt. 2 |pages=3308–16 |year=1975 |pmid=1192404 |doi= |url=}}</ref> | |||
<small> | |||
{| class="wikitable" | {| class="wikitable" | ||
! | ! rowspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Disease | ||
! | ! colspan="8" style="background:#4479BA; color: #FFFFFF;" align="center" |Signs and Symptoms | ||
! | ! rowspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Barium esophagogram | ||
! | ! rowspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Endoscopy | ||
! rowspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Other imaging and laboratory findings | |||
! rowspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Gold Standard | |||
|- | |||
| rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" |Onset | |||
| colspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" |Dysphagia | |||
| rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" |Weight loss | |||
| rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" |Heartburn | |||
| rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" |Other findings | |||
| rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" |Mental status | |||
|- | |||
| style="background:#4479BA; color: #FFFFFF;" align="center" |Solids | |||
| style="background:#4479BA; color: #FFFFFF;" align="center" |Liquids | |||
| style="background:#4479BA; color: #FFFFFF;" align="center" |Type | |||
|- | |- | ||
| style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Plummer-Vinson syndrome]] | |||
| | | | ||
* Gradual | |||
| + | |||
| - | |||
|Non progressive | |||
| +/- | |||
| - | |||
| | | | ||
* [[Glossitis]] | |||
* [[Koilonychia]] | |||
|Normal | |||
| | | | ||
* Thin projections on the anterior [[esophageal]] wall | |||
* Multiple upper [[Esophageal stricture|esophageal constrictions]] | |||
[[Image:Plummer-vinson-syndrome.jpg|center|200px|thumb|Barium esophagogram (Source: Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/14029">rID: 14029</a>)]] | |||
| | |||
* Direct visualization of [[esophageal webs]] | |||
* Superior to [[esophagogram]] | |||
<div style="width:350px">{{#ev:youtube|HFfsTgsB6Pg}}</div> | |||
| | | | ||
* Videofluoroscopy shows [[mucosal]] and [[submucosal]] foldings | |||
| | |||
Triad of | |||
* [[Iron deficiency anemia]] | |||
* [[Esophageal webs]] | |||
* [[Glossitis]] | |||
|- | |- | ||
| style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Esophageal stricture]] | |||
| | | | ||
* Gradual | |||
* Sudden onset | |||
| + | |||
| - | |||
|Progressive | |||
| +/- | |||
| +/- | |||
| | | | ||
* [[Odynophagia]] | |||
* [[Cough]] | |||
* [[Chest pain]] | |||
|Normal | |||
| | | | ||
*Sacculations | |||
*Fixed transverse folds | |||
*[[Esophageal]] intramural pseudodiverticula | |||
[[Image:Benign-oesophageal-stricture.jpg|center|200px|thumb|Case courtesy of Dr Ahmed Abd Rabou, Radiopaedia.org, rID: 23008]] | |||
| | | | ||
|- | * [[Mucosal]] edema | ||
* Circumferential thickening in [[Gastroesophageal reflux disease|GERD]] | |||
* Pale [[mucosa]] with white [[exudate]] in lymphocytic esophagitis | |||
* [[Swelling]] and [[hemorrhagic]] [[congestion]] in [[caustic]]<nowiki/> ingestion | |||
<div style="width:350px">{{#ev:youtube|vax5E-jMnQ}}</div> | |||
| | | | ||
* [[Manometry]] may show dysmotility | |||
* [[CT scan]] for staging [[malignant]] [[strictures]] | |||
| | | | ||
* [[Esophagogram|Barium esophagogram]] | |||
|- | |||
| style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Diffuse esophageal spasm]] | |||
| | | | ||
* Sudden | |||
|<nowiki>+</nowiki> | |||
|<nowiki>+</nowiki> | |||
|Non progressive | |||
|<nowiki>+</nowiki> | |||
|<nowiki>+</nowiki> | |||
| | | | ||
* [[Chest pain]] | |||
|Normal | |||
| | | | ||
* | * Nonperistaltic and nonpropulsive contractions | ||
* Corkscrew or rosary bead esophagus | |||
[[Image:DES radio.png|center|200px|thumb|Barium swallow appearance of DES<br>Source:By Nevit Dilmen [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)]] | |||
| | | | ||
* | * Inconclusive | ||
<div style="width:350px">{{#ev:youtube|2ipA34iMA3c}}</div> | |||
| | | | ||
* | *[[Manometry]] shows high-amplitude [[esophageal]] contractions | ||
*[[CT scan]] may show [[hypertrophy]] of esophageal muscles | |||
| | | | ||
* [[Manometry]] | |||
* [[Manometry]] | |||
|- | |- | ||
|[[ | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Achalasia]] | ||
|Chest pain | | | ||
* Gradual | |||
| + | |||
|<nowiki>+</nowiki> | |||
|Non progressive | |||
| +/- | |||
| - | |||
| | |||
* [[Regurgitation]] of undigested food | |||
* [[Chest pain]] | |||
|Normal | |Normal | ||
| | | | ||
* | * "Bird's beak" or "rat tail" appearance | ||
* Dilated esophageal body | |||
* [[ | * Air fluid level (absent [[peristalsis]]) | ||
* Absence of an intragastric air bubble | |||
* | [[Image:Achalasia-2.jpg|center|200px|thumb|Case courtesy of Dr Mario Umana, Radiopaedia.org, rID: 38071]] | ||
| | | | ||
* | * Dilated [[esophagus]] | ||
* | * Residual food fragments | ||
* Normal [[mucosa]] | |||
<div style="width:350px">{{#ev:youtube|ydLcskQzEjM}}</div> | |||
| | | | ||
* [[ | * Residual pressure of [[Lower esophageal sphincter|LES]] > 10 mmHg | ||
** | * Incomplete relaxation of the [[Lower esophageal sphincter|LES]] | ||
* | * Increased resting tone of [[Lower esophageal sphincter|LES]] | ||
* Aperistalsis | |||
| | | | ||
* [[ | * History of [[dysphagia]] with positive [[endoscopy]] and [[manometry]] | ||
|- | |- | ||
|[[Systemic sclerosis]] | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Systemic sclerosis]] | ||
| | | | ||
* [[ | * Gradual | ||
| + | |||
|<nowiki>+</nowiki> | |||
|Progressive | |||
| +/- | |||
| + | |||
| | |||
* [[Muscle pain|Muscle]] and [[Arthralgia|joint pain]] | |||
* [[Raynaud's phenomenon]] | * [[Raynaud's phenomenon]] | ||
* Skin changes | * [[Skin changes]] | ||
|Normal | |||
| | | | ||
* Dysmotility | * Dysmotility | ||
* Patulous esophagus | * Patulous [[esophagus]] | ||
| | | | ||
* Mucosal damage | * [[Mucosal]] damage | ||
* | * [[Peptic]] stricture (advanced cases) | ||
|Positive serology for | |Positive serology for | ||
* [[Antinuclear antibodies]] | * [[Antinuclear antibodies]] | ||
Line 107: | Line 179: | ||
* [[Creatine kinase]] | * [[Creatine kinase]] | ||
* [[ | * [[ESR]] | ||
| | |||
* [[Skin biopsy]] | |||
|- | |- | ||
|[[ | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Zenker's diverticulum]] | ||
| | | | ||
* [[ | * Gradual | ||
| + | |||
|<nowiki>-</nowiki> | |||
| | |||
| +/- | |||
| - | |||
| | |||
* Food [[regurgitation]] | |||
* [[ | * [[Halitosis]] | ||
* [[ | * [[Coughing|Cough]] | ||
* | * [[Hoarseness]] | ||
|Normal | |||
| | |||
* Thin projections on [[esophageal]] wall over [[Killian's dehiscence|Killian's triangle]] | |||
[[Image:Zenker-4.jpg|center|200px|thumb| Radiopaedia.org">{{cite web |url=https://radiopaedia.org/cases/zenker-diverticulum |title=Zenker diverticulum | Radiology Case | Radiopaedia.org |format= |work= |accessdate=}}<nowiki></ref></nowiki>]] | |||
| | |||
* Outpouching of posterior [[pharyngeal]] wall | |||
* [[ | * Exclude the presence of [[Squamous cell carcinoma|SCC]] | ||
<div style="width:350px">{{#ev:youtube|FdEruFsNdVA}}</div> | |||
| | |||
* [[CT]] & [[MRI]] shows out-pouching over the posterior esophagus in the Killian's triangle | |||
* | |||
| | | | ||
* | * Barium [[Esophagogram|esophagography]] | ||
|- | |||
| style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Esophageal carcinoma]] | |||
| | | | ||
* | * Gradual | ||
|<nowiki>+</nowiki> | |||
|<nowiki>+</nowiki> | |||
|Progressive | |||
| + | |||
|<nowiki>+/-</nowiki> | |||
| | | | ||
* | * [[Lymphadenopathy]] | ||
* | * [[Cachexia]] | ||
| | |Normal | ||
| | | | ||
* [[ | * Irregular [[Strictures|stricture]] | ||
* [[ | * Pre-stricture [[dilatation]] | ||
[[Image:Oesophageal-squamous-cell-carcinoma-2.jpg|center|200px|thumb|Case courtesy of Dr Bruno Di Muzio, Radiopaedia.org, rID: 4232f]] | |||
| | | | ||
* Esophageal | * [[Esophageal]] obstruction | ||
* | * Staging of disease | ||
<div style="width:350px">{{#ev:youtube|5ucSlgqGAno}}</div> | |||
| | | | ||
* | * [[CT]] and [[PET scan]] is an optional test for staging of the disease | ||
| | | | ||
* [[ | * [[Biopsy]] | ||
|- | |- | ||
|[[ | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Stroke]] | ||
([[Cerebral hemorrhage]]) | |||
| | | | ||
* [[ | * Sudden | ||
|<nowiki>+</nowiki> | |||
|<nowiki>+</nowiki> | |||
|Progressive | |||
|<nowiki>+</nowiki> | |||
|<nowiki>+/-</nowiki> | |||
| | |||
* [[Dysarthria]] | |||
* [[ | * Limb [[weakness]] | ||
* | * [[Fatigue]] | ||
|Impaired | |||
| | | | ||
* | * Pooling of [[Contrast medium|contrast]] in the [[pharynx]] | ||
* [[Aspiration]] of [[barium]] [[Contrast medium|contrast]] into the [[airway]] | |||
| | | | ||
* | * Reduced opening of [[upper esophageal sphincter]] | ||
* Reduced [[larynx]] elevation | |||
| | |||
* [[CT]] without [[contrast]] shows acute [[hemorrhage]] as a hyperattenuating [[clot]] | |||
| | |||
* [[CT]] without [[Contrast medium|contrast]] | |||
|- | |||
| style="padding: 5px 5px; background: #DCDCDC;" align="center" |Motor disorders | |||
([[Myasthenia gravis]]) | |||
| | |||
* Gradual | |||
| + | |||
| + | |||
|Progressive | |||
|<nowiki>+/-</nowiki> | |||
| | |||
| | |||
* [[Ptosis]] | |||
* [[Diplopia]] | |||
* [[Fatigue]] | |||
|Normal | |||
| | |||
* Stasis in [[pharynx]] and pooling in pharyngeal recesses | |||
| | |||
* [[Velopharyngeal insufficiency]] | |||
* Delayed [[swallowing]] function | |||
| | |||
* CT may show anterior [[mediastinal]] mass ([[thymoma]]) | |||
* Positive tensilon test | |||
| | | | ||
* | * Anti–acetylcholine receptor antibody test | ||
|- | |- | ||
|[[ | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[GERD]] | ||
| | | | ||
* | * Gradual | ||
* [[ | * Sudden onset | ||
| + | |||
| - | |||
|Progressive | |||
| +/- | |||
| + | |||
| | |||
* [[Cough]] | |||
* | * [[Hoarseness]] | ||
|Normal | |||
| | |||
* Free acid reflux | |||
* [[Esophagitis]] with scarring | |||
* [[Strictures]] | |||
* [[Barrett's oesophagus]] | |||
| | | | ||
* | * [[Erythema]], erosions and [[ulceration]] | ||
* [[Barrett's esophagus]] | |||
* | |||
| | | | ||
* [[ | * Esophageal [[manometry]] may show decreased tone of [[Lower esophageal sphincter|LES]] | ||
| | | | ||
* | * 24 hour [[esophageal]] pH monitoring | ||
|- | |- | ||
|[[ | | style="padding: 5px 5px; background: #DCDCDC;" align="center" |[[Esophageal web]] | ||
| | |||
* Gradual | |||
| + | |||
| +/- | |||
|Progressive | |||
| - | |||
| +/- | |||
| | |||
* Findings of the underlying cause such as [[iron deficiency anemia]] or [[bullous pemphigoid]] | |||
|Normal | |||
| | | | ||
* | * Symmetrical narrowing of the [[esophagus]] | ||
| | | | ||
* | * Smooth membrane not encircling the whole [[Lumen (anatomy)|lumen]] | ||
| | | | ||
* | * Videofluoroscopy shows [[mucosal]] and [[submucosal]] foldings | ||
| | | | ||
* | * Barium [[esophagogram]] | ||
|} | |} | ||
<small> | |||
{| class="wikitable" | {| class="wikitable" | ||
Line 315: | Line 441: | ||
[[Category:Gastroenterology]] | [[Category:Gastroenterology]] | ||
[[Category:Hematology]] | [[Category:Hematology]] | ||
<references /> |
Latest revision as of 22:23, 7 February 2019
![](/images/1/16/Home_logo1.png)
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Madhu Sigdel M.B.B.S.[2]
Overview
Diffuse esophageal spasm must be differentiated from other diseases that cause dysphagia, chest pain and weight loss such as angina, reflux esophagitis, esophageal carcinoma, systemic sclerosis, nutcracker esophagus, hypertensive LES, esophageal web/stricture, pseudoachalasia, stroke, esophageal candidiasis and Chagas disease etc.
Differential Diagnosis
Diffuse esophageal spasm must be differentiated from other diseases that cause dysphagia, chest pain and weight loss such as angina, reflux esophagitis, esophageal carcinoma, systemic sclerosis, nutcracker esophagus, hypertensive LES, esophageal web/stricture, pseudoachalasia, stroke, esophageal candidiasis and Chagas disease etc.[1][2][3][4][5][6][7][8][9][10][11]
Disease | Signs and Symptoms | Barium esophagogram | Endoscopy | Other imaging and laboratory findings | Gold Standard | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Onset | Dysphagia | Weight loss | Heartburn | Other findings | Mental status | |||||||
Solids | Liquids | Type | ||||||||||
Plummer-Vinson syndrome |
|
+ | - | Non progressive | +/- | - | Normal |
![]() |
{{#ev:youtube|HFfsTgsB6Pg}}
|
|
Triad of | |
Esophageal stricture |
|
+ | - | Progressive | +/- | +/- | Normal |
![]() |
{{#ev:youtube|vax5E-jMnQ}}
|
|
||
Diffuse esophageal spasm |
|
+ | + | Non progressive | + | + | Normal |
![]() Source:By Nevit Dilmen [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0) |
{{#ev:youtube|2ipA34iMA3c}}
|
|
||
Achalasia |
|
+ | + | Non progressive | +/- | - |
|
Normal |
![]() |
{{#ev:youtube|ydLcskQzEjM}}
|
||
Systemic sclerosis |
|
+ | + | Progressive | +/- | + |
|
Normal |
|
|
Positive serology for | |
Zenker's diverticulum |
|
+ | - | +/- | - |
|
Normal |
![]() |
{{#ev:youtube|FdEruFsNdVA}}
|
| ||
Esophageal carcinoma |
|
+ | + | Progressive | + | +/- | Normal |
![]() |
{{#ev:youtube|5ucSlgqGAno}}
|
|||
Stroke |
|
+ | + | Progressive | + | +/- |
|
Impaired |
|
|
||
Motor disorders |
|
+ | + | Progressive | +/- | Normal |
|
|
|
| ||
GERD |
|
+ | - | Progressive | +/- | + | Normal |
|
|
| ||
Esophageal web |
|
+ | +/- | Progressive | - | +/- |
|
Normal |
|
|
|
|
Manifestations | Diagnostic tools | ||||
---|---|---|---|---|---|
Achalasia |
![]() | ||||
GERD |
|
![]() | |||
Esophageal carcinoma |
|
![]() | |||
Esophageal stricture |
|
![]() | |||
Plummer-Vinson syndrome | Common symptoms of Plummer-Vinson syndrome include:[9][10][11]
Less common symptoms
|
Lab tests are consistent with the diagnosis of iron deficiency anemia.
Findings on an x-ray (barium esophagogram) suggestive of esophageal web/strictures associated with Plummer-Vinson syndrome appear as either:
![]() |
References
- ↑ Ferri, Fred (2015). Ferri's clinical advisor 2015 : 5 books in 1. Philadelphia, PA: Elsevier/Mosby. ISBN 978-0323083751.
- ↑ 2.0 2.1 2.2 2.3 Boeckxstaens GE, Zaninotto G, Richter JE (2013). "Achalasia". Lancet. doi:10.1016/S0140-6736(13)60651-0. PMID 23871090.
- ↑ 3.0 3.1 Badillo R, Francis D (2014). "Diagnosis and treatment of gastroesophageal reflux disease". World J Gastrointest Pharmacol Ther. 5 (3): 105–12. doi:10.4292/wjgpt.v5.i3.105. PMC 4133436. PMID 25133039.
- ↑ 4.0 4.1 4.2 Napier KJ, Scheerer M, Misra S (2014). "Esophageal cancer: A Review of epidemiology, pathogenesis, staging workup and treatment modalities". World J Gastrointest Oncol. 6 (5): 112–20. doi:10.4251/wjgo.v6.i5.112. PMC 4021327. PMID 24834141.
- ↑ Matsuura H (2017). "Diffuse Esophageal Spasm: Corkscrew Esophagus". Am. J. Med. doi:10.1016/j.amjmed.2017.08.041. PMID 28943381.
- ↑ Lassen JF, Jensen TM (1992). "[Corkscrew esophagus]". Ugeskr. Laeg. (in Danish). 154 (5): 277–80. PMID 1736462.
- ↑ 7.0 7.1 Ruigómez A, García Rodríguez LA, Wallander MA, Johansson S, Eklund S (2006). "Esophageal stricture: incidence, treatment patterns, and recurrence rate". Am. J. Gastroenterol. 101 (12): 2685–92. doi:10.1111/j.1572-0241.2006.00828.x. PMID 17227515.
- ↑ 8.0 8.1 Shami VM (2014). "Endoscopic management of esophageal strictures". Gastroenterol Hepatol (N Y). 10 (6): 389–91. PMC 4080876. PMID 25013392.
- ↑ 9.0 9.1 López Rodríguez MJ, Robledo Andrés P, Amarilla Jiménez A, Roncero Maíllo M, López Lafuente A, Arroyo Carrera I (2002). "Sideropenic dysphagia in an adolescent". J. Pediatr. Gastroenterol. Nutr. 34 (1): 87–90. PMID 11753173.
- ↑ 10.0 10.1 Chisholm M (1974). "The association between webs, iron and post-cricoid carcinoma". Postgrad Med J. 50 (582): 215–9. PMC 2495558. PMID 4449772.
- ↑ 11.0 11.1 Larsson LG, Sandström A, Westling P (1975). "Relationship of Plummer-Vinson disease to cancer of the upper alimentary tract in Sweden". Cancer Res. 35 (11 Pt. 2): 3308–16. PMID 1192404.
- ↑ Ferri, Fred (2015). Ferri's clinical advisor 2015 : 5 books in 1. Philadelphia, PA: Elsevier/Mosby. ISBN 978-0323083751.