title: Enlarged accessory spleen presenting stomach submucosal tumor.
abstract: A 62-year-old man presented with upper abdominal discomfort underwent upper gastrointestinal endoscopy. Gastroscopy and endoscopic ultrasonography revealed a submucosal tumor (SMT) with homogenous echogenicity originated from extragastric organs. An abdominal contrast-enhanced computed tomography (CT) showed that the well-marginated ovoid mass, approximately 6 cm in diameter, enhanced homogenously to a similar degree as splenic parenchyma. (99m)Technetium sulfur colloid scintigraphy revealed the splenic nature of the mass. A diagnosis of accessory spleen mimicking gastric SMT was made. Subsequent follow-up was uneventful without performing splenectomy.
authors.affiliation: Second Department of Internal Medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
authors.forename: Shunzen
authors.initials: S
authors.lastname: Chin
authors.forename: Hajime
authors.initials: H
authors.lastname: Isomoto
authors.forename: Yohei
authors.initials: Y
authors.lastname: Mizuta
authors.forename: Chun-Yang
authors.initials: CY
authors.lastname: Wen
authors.forename: Saburo
authors.initials: S
authors.lastname: Shikuwa
authors.forename: Shigeru
authors.initials: S
authors.lastname: Kohno
mesh_terms: D003937:Diagnosis, Differential; D016099:Endoscopy, Gastrointestinal; D019160:Endosonography; D005753:Gastric Mucosa / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013154:Spleen / Q000002:abnormalities* / Q000000981:diagnostic imaging* / Q000601:surgery; D013156:Splenectomy; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D014055:Tomography, Emission-Computed