Background: Microcystic adnexal carcinoma (MAC) is a rare cutaneous neoplasm, with a high rate of local recurrences. Objective: A series of MAC was analyzed and compared to previously published cases. Methods: Seven cases of MAC were identified in the register of the institution. Medical and pathological records were reviewed. Results: The primary MAC were located on the face in all patients, and 85% were initially misdiagnosed. The mean follow-up duration was 108 months. The recurrence rate was high: 4 patients developed recurrences. In 3 patients, the course of the disease was severe: one of them developed pathologically proven lung metastasis. Conclusion: The present study and review of the literature confirm the clinically aggressive evolution of MAC and its rare ability to give rise to metastasis. Long-term clinical follow-ups with imaging investigations are mandatory.

Keywords:
Microcystic adnexal carcinoma, Lung metastasis
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2006
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