Incidental multifocal granular cell tumor in the setting of chronic gastritis discovered following gastric sleeve operation: a case report and brief review of the literature.

Granular cell tumors are uncommon neoplasms of Schwannian origin that can present nearly anywhere in the body, but are most commonly seen in the head and neck region. While the majority of these tumors are benign, a subset can behave aggressively and even have metastatic potential. We are reporting a case of a 35-year-old female with a history morbid obesity presenting for bariatric surgery (sleeve gastrectomy). Upon receiving the specimen in pathology, nodular vaguely defined lesions were identified in the gastric wall. Representative sections were submitted for microscopic examination, which revealed the incidental finding of a multifocal granular cell tumor with a background of chronic gastritis. The patient has not had any regional recurrences or metastasis in the past 2 years following the procedure.