A CASE OF ELEVATED LESION AT THE ESOPHAGO-GASTRIC JUNCTION THAT RELEALED PSEUDOSARCOMATOUS FEATURE HISTOLOGICALLY

Abstract

A 54-year-old man was detected small elevated lesion at the esophago-gastric junction on endoscopy. Histological study of the biopsy specimens showed many large atypical cells suggesting a sarcomatous lesion most probable. These atypical cells were immunohistochemically positive only for vimentin, and were negative for other tumor markers useful for identify the tumor cell origin. The lesion disappeared during the follow up studies, and the diagnosis of pseudosarcomatous granulation (PG) was made. It is important to recognize PG that may lead to an erroneous diagnosis of malignancy.