Ectopic liver tissue in the esophagus: a case report
A 27-year-old previously healthy Chinese man with an oesophageal polyp found by gastroscopy was admitted for further treatment. The patient had a discontinuous abdominal pain in the upper abdomen for 2 months. The pain was relieved after eating, and a gastroscopy was performed, which suggested chronic atrophic gastritis and polyp of the esophagus.

He was admitted for an endoscopic polypectomy. Posthospital examinations: the general condition was good, and the vital signs were stable, and the routine blood, stool, urine, blood coagulation, and liver and kidney function tests were normal. The abdominal B-ultrasound, the electrocardiogram, and the chest X-ray were also normal. Gastroscopy: there was a polypoid mucosal uplift on the distal region of the esophagus near the cardia, and the surface was reddish and lobulated, with a diameter of 1.2 cm. Indicarmine and normal saline were injected into the submucous layer under the polyp, and then a complete excision using a ring was performed. The mass we removed was tough. The wound was clamped with 4 titanium clips, and no obvious bleeding and perforation were found after the operation.

Polyp pathology: (esophagus) liver tissue. Microscopically, blood vessels and small bile duct structures were observed in the fibrous connective tissue, and banded epithelioid cells were attached to the edges. The cells were polygonal. Meantime, the nucleus was large, round, and centered. And the cytoplasm was rich as well as eosinophilic. The alignment of cells had no obvious structure. Immunohistochemistry: hepatocyte (+), desmin (−), smooth muscle actin (−), S-100 (−), cytokeratin (+), and leucocyte common antigen (−). The patient made an unremarkable postoperative recovery and was discharged on the third postoperative day.

Source: Medicine: April 2019 - Volume 98 - Issue 17 - p e15260

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