324.Malignant and benign gastric ulcer

每天朗读一段医学影像学英语文章

Essential Facts

· The key to this case is not just identifying the ulcer, but also recognizing the imaging differences between the two principal types of gastric ulcer: a malignant gastric ulcer and a benign peptic ulcer.

· Malignant gastric ulcers result from ulcerations within tumors and:

· Arise from several tumor types, including primary gastric adenocarcinoma, gastrointestinal stromal tumor, leiomyosarcoma, and metastasis.

· May appear in locations atypical for peptic ulcers, such as the fundus (see below).

· Typically project within the confines of the gastric lumen.

· May be surrounded by irregular, nodular soft tissue and featureless mucosa with absent areae gastricae.

· Lack barium-filled folds radiating to the edge of the crater.

· Gastric peptic ulcers:

· Are usually located along the lesser curve or posterior wall of the body or antrum.

· Usually project beyond the gastric lumen.

· May be surrounded by a smooth rim of edematous folds (ulcer mound), prominent areae gastricae, and a radio-lucent line (Hampton line) that separates the barium-filled crater from the barium-coated stomach wall.

· May have barium-filled folds radiating directly to the edge of the ulcer crater.

Notes:

1. leiomyosarcoma /'laiəu,maiəusɑ:'kəumə/ 平滑肌肉瘤

2. fundus /'fʌndəs/ n. 底；基底；底部

来源：每天朗读一段医学影像学英语文章

圈主

深圳市人民医院放射科副主任医师杨敏洁

---