Tumors

Gastric Tumors

UPPER GASTROINTESTINAL SUBEPITHELIAL TUMORS

Gastric gastrointestinal stromal tumor (GIST) with rapid growing. (A) Endoscopy didn’t detect any mass in the stomach. (B) Four years later, endoscopy showed round smooth elevated mass in gastric angle. (C, D) Enodoscopic subtumorial resection was performed. Tumor size was 1.7 cm

• Most lesions are asymptomatic and clinically insignificant

• GIST is the most common subepithelial tumor to occur in the stomach

• The risk of GIST metastasis cannot be accurately predicted before lesions are completely resected

• Most of these are benign. Endoscopy and EUS are helpful to distinguish malignant tumors

NON-HODGKIN’S LYMPHOMA

Induration of the gastric wall and multiple deep ulcerations are always suspicious for malignancy. Left image: malignant infiltration of the gastric folds; Middle image: ulcerated malignant mass; Right image: malignant infiltration of the pylorus

Malignant tumors of the stomach account for only 5% or less of all malignant neoplasm in chil- dren. The most common malignant gastric tumors in children are non-Hodgkin or Burkitt’s lym- phoma or gastric involvement in lymphoprolifera- tive disorder after solid organs or bone marrow transplantation

Burkitt’s lymphoma of the stomach and the small intestine. Loose teeth were the presenting symptom. EGD was performed to evaluate progressive weight loss, abdominal pain and anemia. Multiple erythematous nodules with or without ulcerations and infiltration of the gastric wall were found. The diagnosis was confirmed morphologically of the gastric and bone marrow biopsies. Left picture: multiple ulcerated masses in the proximal stomach; Middle picture: ulcerated masses along the greater curvature of the stomach; Right picture: focal malignant infiltration of the duodenum