A Gastric Schwannoma Misdiagnosed as B Cell Lymphoma

Keimyung Medical Journal 2012;31(2):259-264.

Kyung lim Koo; Yu Na Kang

Abstract

Schwannomas are benign; slow-glowing tumor; and they are very rare. Schwannomas are only 0.2% of all gastric neoplasm; and 4% of benign gastric neoplasm. Schwannomas are histologically composed of mostly spindle cells and peripheral cuff of lymphoid cells aggregations. Peripheral lymphoid cuff of schwannomas is usually focal and thin; but it may rarely have thick band-like lymphoid tissue. Here we report a 53-year-old male; who was initially suspicious of MALT lymphoma in endoscopic biopsy due to thick lymphoid tissue; and diagnosed gastric schwannoma by partial gastrectomy later for the diagnostic confirmation. This case report is written to report a case of misdiagnosis and to tell the reason why repeated biopsy is important.

Key Words: Lymphoid cells, Schwannoma, Stomach

TOOLS