Primary XXXX of the esophagus. Report of a case and its histochemical characterization.

@entity1 @entity2347 @entity904 @entity5
A case of primary @entity2347 of the esophagus was reported. A 54-year-old male @entity1 had a @entity5 in the middle third of the esophagus. Barium swallow and endoscopic examination showed a @entity5 with a shallow ulceration in its vertex. Histological examination of the surgically removed material revealed that it was largely confined to the submucosal layer, with no metastasis to lymph nodes. The @entity5 cells presented three distinct patterns: globular nest with irregular cystic spaces, trabecular nest, and true tubule. Electron microscopic study revealed no microvilli or triad along cystic spaces in the globular nests. Histochemical study disclosed that cystic spaces and interstitium were rich in glycosaminoglycans. The luminal surface of the true tubules of the @entity5 , on the other hand, was characteristically lined by sialomucins. The trabecular type-nests differed from the globular nests in showing GSA-II reactivity and containing abundant @entity904 -binding protein. These results indicate that the three patterns represented different differentiations of the @entity5 cells. Twenty-three cases of esophageal @entity2347 were found in the literature from 1950 to 1983 and discussed collectively.
