Histopathological classification of nonneoplastic and neoplastic gastrointestinal submucosal lesions.

摘要: This article provides an overview of the histopathologically defined nonneoplastic and neoplastic entities involved in submucosal lesions (SMLs) gastrointestinal tract, particularly those upper tract. The gross appearance histomorphological cytomorphological features most frequent SMLs are described, including stromal tumor (GIST), leiomyoma, lipoma, carcinoid, granular-cell tumor, glomus schwannoma, metastases, Brunner's gland hamartoma, pancreatic rests, cysts. current state important technical aspects biopsy processing role histology cytology diagnosis discussed.