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Our patient's history provided 2 important clues (one vascular, one not) to explain the painless ulcer that had been on his right shin for a year. A punch biopsy made the diagnosis clear.

患者的病史提供了两条重要线索（一条与血管有关，一条无关），用以解释其右小腿上已存在一年的无痛性溃疡。一次组织块活检明确了诊断。

Our patient's history provided 2 important clues (one vascular, one not) to explain the painless ulcer that had been on his right shin for a year. A punch biopsy made the diagnosis clear.