Journal List > Korean J Gastroenterol > v.58(4) > 1006864

Goh, Kim, Kim, Lee, Moon, Kim, Lee, and Jeong: A Case of Gastric Lymphoepithelioma-like Carcinoma Presenting as Panperitonitis by Perforation of Stomach

Abstract

Gastric lymphoepithelioma-like carcinoma is a rare carcinoma among gastric malignant tumor but has a good prognosis. The carcinoma has histologic feature characterized by small nest of cancer cells mixed with lymphoid stroma. We report a case with lymphoepithelioma-like carcinoma of stomach initially presenting as panperitonitis because of spontaneous tumor perforation. A 56-year-old man visited our emergency room because of epigastric pain. A preoperative abdominal CT scan showed a massive pneumoperitoneum in the upper abdomen, and the presence of gastric cancer in the lesser curvature of the stomach. An emergent laparotomy was performed followed by radical subtotal gastrectomy. Pathologic examination revealed that the tumor was a lymphoepithelioma-like gastric carcinoma.

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Fig. 1.
Chest X-ray finding. It showed free air below the right diaphragm.
kjg-58-208f1.tif
Fig. 2.
Abdominal CT finding. It showed massive pneumoperitoneum, especially in the upper abdomen. Cancer with occult perforation was suspected because of gastric wall thickening with small air bubble in the lesser curvature of the stomach.
kjg-58-208f2.tif
Fig. 3.
Gross finding of subtotally resected stomach. There was a large ulceroinfiltrative lesion in the antrum along the lesser curvature. The size of tumor was 6.9×6.6 cm sized. At the central portion of the tumor a tiny hole was noted, suggesting perforated site (yellow arrow).
kjg-58-208f3.tif
Fig. 4.
Pathologic findings. (A) Tumor cells infiltrated into the serosa (H&E, ×20). (B) Tumor cells consisted ‘pushing border' around the muscle layer. It was characteristic of lymphoepithelioma-like carcinoma (H&E, ×20). (C) Nests of tumor cells were mixed with numerous lymphocytes. A lot of lymphocytes infiltrated into the surrounding muscle layers (H&E, ×200).
kjg-58-208f4.tif
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