Sonographic Characteristics of a Large Gastric Lipoma: Report of a Case

　　　　　Gastric lipoma is a rare benign gastric submucosal tumor. Endoscopic ultrasonography (EUS) is a tool used to evaluate gastric submucosal tumors. The sonographic picture of a small gastric lipoma has been reported to be of a diffusely homogenous, hyperechoic pattern. Herein is presented a case of a giant gastric lipoma measuring 10×6×3 cm. Transabdominal ultrasonography (TAU) showed a well-defined tumor originating from the gastric submucosal layer. Its homogenous hyperechoic pattern showed some strong hyperechoic bands within the mass. EUS demonstrated a clearer echo pattern than that obtained with TAU. These characteristic pictures obtained by TAU and EUS led to the diagnosis of a giant gastric lipoma originating from the submucosal layer. This was confirmed by computed tomography and magnetic resonance imaging, and subsequently by histology.