同年右耳廓发生角化棘皮瘤，手术切除治愈。
In the same year keratoacanthoma appeared on the right ear, and was removed by surgery later.
目的：探讨两组诊断名称近似（黑棘皮病与角化棘皮瘤等）疾病的医学编码。
Objective To discuss the medical coding of two diseases with approximative diagnosis name.
结论：细胞凋亡为角化棘皮瘤的典型生物学特征，可能在KA的自然消退中发挥重要作用。
Conclusion It is suggested that cell apoptosis be a biologic characteristic of KA and may play an important role in spontaneous regression of KA.
结论：细胞凋亡为角化棘皮瘤的典型生物学特征，可能在KA的自然消退中发挥重要作用。
Conclusion It is suggested that cell apoptosis be a biologic characteristic of KA and may play an important role in spontaneous regression of KA.
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