单词 | Rodent Ulcers |
释义 | Rodent Ulcers《英文msh词典》Rodent Ulcers [入口词] Rodent Ulcers [主题词] Carcinoma,Basal Cell [英文释义] A malignant skin neoplasm that seldom metastasizes but has potentialities for local invasion and destruction. Clinically it is divided into types: nodular,cicatricial,morphaic,and erythematoid (pagetoid). More than 95% of these carcinomas occur in patients over 40. They develop on hair-bearing skin,most commonly on sun-exposed areas. Approximately 85% are found on the head and neck area and the remaining 15% on the trunk and limbs. (From Dorland,27th ed; DeVita Jr et al.,Cancer: Principles & Practice of Oncology,3d ed,p1471) |
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