Unusual lesion of the temporal region, benign tumor of the Chievitz's organ: a case report.

Normally present in the temporal region, the juxtaoral organ of Chievitz has considerable importance for both the surgeon and the pathologist. Although very rare, the nodular hyperplasia of the Chievitz's organ has been misinterpreted as invasive carcinoma. The pathological aspect mimics the mucoepidermoid carcinoma, squamous carcinoma, basal cell carcinoma with sebaceous differentiation or tumor of the skin appendages. We present the case of a 71-year-old patient admitted with temporal tumor. The initial pathological diagnosis was mixed squamous basal cell carcinoma. The subsequent evaluation of sections and immunohistochemistry allowed us to demonstrate a benign tumor of the Chievitz's organ. In this case, therapy and prognosis are strongly related to the correct diagnosis and avoid an over treatment of a benign tumor.