Method: 3 patients with skin ulcer had their local lesion area examined to get a preliminary diagnosis.The secretion from the ulcer area was further examined in detail using CTB technique.

• 方法：在对3例病人局部病变作出临床初诊后，拭取溃疡分泌物进行国家卫生部推广的妇科白带涂片多项检查快速染色技术（简称CTB技术）检查。