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