简述原发性皮肤T淋巴细胞瘤的临床类型及其特点。
能引起无痛性黄疸的胰腺病变是() ["胰腺假性囊肿","慢性胰腺炎","功能性胰岛细胞瘤","胰头癌","急性胰腺炎"]
骨肿瘤的好发部位错误的是() ["骨巨细胞瘤好发于长骨的干骺端","骨肉瘤好发于长骨的干骺端","骨髓瘤好发于扁骨","骨瘤好发于颅骨","非骨化性纤维瘤好发于骨皮质"]
常引起主胰管多发性结石的胰腺病变是() ["胰腺假性囊肿","慢性胰腺炎","功能性胰岛细胞瘤","胰头癌","急性胰腺炎"]
下列叙述正确的是() ["骨软骨瘤好发于中年人","尤因肉瘤多见于青年人","骨巨细胞瘤发于20岁以下的青少年","软骨母细胞瘤好于青年","软骨肉瘤多见于30岁以上"]
简述恶性黑素瘤的临床类型及其特点。