A statistical analysis of basal cell carcinoma *
Basal cell cinoma (BCC) is one of the most frequent malignant skin tumors and is often seen on the face. This study aims to analyze the tumor diameter, site, patient's age, surgical treatment and so on. This study analyzed 49 cases of basal cell carcinoma (BCC) which were treated at the Department of Plastic and Reconstructive Surgery at Kawasaki Medical School Hospital from January 1990 to May 2001. The patients were between(13-98)years old, average was 63-4 years. The male to female ratio was 1.3 '. 1 respectively. The average duration between the onset of BCC and the patient's initial visit was 3.6 years. Tumor diameter ranged from 4 mm to 100 mm(average was 15.1 mm). Almost all tumors occurred on the face (especially on the so-called"facial cleft") except one case which occurred on the left knee. Eighty-five percent of clinical types of tumor were nodular and nodulo-ulcerative. Seventy-five percent of histological types were solid. Surgical excision was performed in all cases and skin defects were closed by local flaps (67%) , simple closure(16%) and other methods. The surgical margin was less than 5 mm in 81.6% of the cases. There were 2 recurrent cases. One was a case of Xeroderma pigmentosum on the face (ulcus tereblans, solid type) and the other was a case of BCC on the temporal region (nodular, keratotic type). In accordance with previous results, we suggest further detailed classification and analysis of surgical margins.(Accepted onDecember 3 , 2002)
