Abrikossoff tumor: does it origin in swchann cells? Case report.

BACKGROUND: Abrikossoff tumor is an uncommon neoplasia, benign in most of the cases, that affects soft tissues, skin, and oral mucosa. Between 1% and 2% of cases are malignant and, in these cases, outcome is usually fatal. Between 5% and 25% of patients have multiple lesions. CASE REPORT: A 52-year old Caucasian male was referred to the Plastic Surgery Department with a lesion in the tongue. A wide surgical excision was subsequently performed and the final pathologic diagnosis was Abrikossoff's tumor. DISCUSSION: The pathogenesis of this tumor has long been subject of research and debate, and its origin has still to be clearly established. At the time, Abrikossoff proposed a myogenic origin, later studies supported a neural differentiation. According to the data in the literature the expression of S-100, that we found in our case, sustains the hypothesis that Abrikossoff tumor has origin in the Schwann's cells. CONCLUSIONS: In our opinion, Abrikossoff tumor has origin in the Schwann's cells. However familial cases, congenital cases, and multiple lesions are uncommon, and it is worth stressing that this tumor has a good prognosis but every patient with Abrikossoff tumor should undergo a complete physical examination to rule out the presence of multiple associated tumors and possible visceral involvement.

Basal cell carcinoma: 10 years of experience.

Introduction. Basal cell carcinoma (BCC) is a locally invasive malignant epidermal tumour. Incidence is increasing by 10% per year; incidence of metastases is minimal, but relapses are frequent (40%-50%). The complete excision of the BCC allows reduction of relapse. Materials and Methods. The study cohort consists of 1123 patients underwent surgery for basal cell carcinoma between 1999 and 2009. Patient and tumor characteristics recorded are: age; gender; localization (head and neck, trunk, and upper and lower extremities), tumor size, excisional margins adopted, and relapses. Results. The study considered a group of 1123 patients affected by basal cell carcinoma. Relapses occurred in 30 cases (2,67%), 27 out of 30 relapses occurred in noble areas, where peripheral margin was <3 mm. Incompletely excised basal cell carcinoma occurred in 21 patients (1,87%) and were treated with an additional excision. Discussion. Although guidelines indicate 3 mm peripheral margin of excision in BCC <2 cm, in our experience, a margin of less than 5 mm results in a high risk of incomplete excisions.