Abstract
Neuroendocrine carcinoma (NEC) can rarely be associated with Merkel cell dysplasia. The clinical presentation is usually nonspecific and mild. Paraneoplastic MG is a rare autoimmune phenomenon related to esophageal NEC. We report a case of esophagus tumor having uncommon histology - (NEC) small cell type having Merkel cell dysplasia in the overlying epithelium, presenting as paraneoplastic Myasthenia gravis (MG). Neuro-muscular symptoms may be caused by paraneoplastic syndrome with underlying malignancy. The treatment options are different for esophagus squamous cell carcinoma and adenocarcinoma.
Keywords: Esophagus, Endoscopic ultrasound, Myasthenia crises, Merkel cell dysplasia, Neuroendocrine carcinoma.
References
- Huang Q, Wu H, Nie L, Shi J, Lebenthal A, Chen J, et al. Primary high-grade neuroendocrine carcinoma of the esophagus: a clinicopathologic and immunohistochemical study of 42 resection cases. Am J SurgPathol. 2013; 37(4):467±83. Epub 2013/02/22. https://doi.org/10.1097/PAS.0b013e31826d2639PMID: 23426118
- McKeown F. Oat-cell carcinoma of the oesophagus. J PatholBacteriol. 1952; 64(4):889±91. Epub 1952/10/01. PMID: 13000600
- Robert D. Odze, John R. Goldblum. (2015). Odze and Goldblum surgical pathology of the GI tract, liver, biliary tract, and pancreas. Philadelphia, PA: Saunders/ Elsevier, Chapter no 24,pg no 704,3.
- Doi S, Matsumoto S, Wakatsuki K, Migita K, Ito M, Kunishige T, Nakade H, Hatakeyama K, Ohbayashi C, Sho M. A neuroendocrine carcinoma with a well-differentiated adenocarcinoma component arising in Barrett's esophagus: a case report and literature review. Surg Case Rep. 2018 Aug 29;4(1):103. doi: 10.1186/s40792-018-0511-7. PMID: 30159830; PMCID: PMC6115318.
- Medgyesy DC, Wolff RA, Putnam JB Jr, Ajani JA. Small cell carcinoma of the esophagus. Cancer 2000; 88:262–7
- Tang P, McKinley MJ, Sporrer M and Kahn E. Inlet patch: prevalence, histologic type, and association with esophagitis, barrett esophagus, and antritis. Arch Pathol Lab Med 2004; 128: 444-447.
- Harmse JL, Carey FA, Baird AR, Craig SR, Christie KN, Hopwood D and Lucocq J. Merkel cells in the human oesophagus. J Pathol 1999; 189: 176-179.
- Yang L, Sun X, Zou Y, Meng X. Small cell type neuroendocrine carcinoma colliding with squamous cell carcinoma at esophagus. Int J Clin Exp Pathol2014;7:1792e5.
- A neuroendocrine carcinoma with a well-differentiated adenocarcinoma component arising in Barrett’s esophagus: a case report and literature review Shunsuke Doi, Sohei Matsumoto, Kohei Wakatsuki, Kazuhiro Migita, Masahiro Ito, Tomohiro Kunishige, Hiroshi Nakade, Kinta Hatakeyama, Chiho Ohbayashi, Masayuki ShoSurg Case Rep. 2018 Dec; 4: 103. Published online 2018 Aug 29. doi: 10.1186/s40792-018-0511-7 PMCID: PMC6115318.
Corresponding Author
Dr Anuradha Sekaran
Director & Chief of Pathology, Department of Pathology, AIG Hospitals, Mindspace road, Gachibowli, Hyderabad, Telangana 500032. India