Clinicopathologic features of cutaneous squamous cell carcinomas of the head and neck in patients with chronic lymphocytic leukemia/small lymphocytic lymphoma.

The clinicopathologic features of 32 cutaneous squamous cell carcinomas of the head and neck in 12 patients with chronic lymphocytic leukemia/small lymphocytic lymphoma were examined to determine the frequency of clinically aggressive and histologically poorly differentiated carcinomas in this group of patients. Two thirds of the neoplasms were multiple and 56% were high grade (grade 3 or 4). One of the 12 patients had recurrent carcinoma, two patients had recurrent and metastatic disease, and two patients had metastatic tumor without recurrence. Two patients died of tumor, one patient is alive with extensive recurrent and metastatic disease, and one patient died of an uncertain type of carcinoma. An additional patient with squamous cell carcinoma of the face died of cutaneous squamous cell carcinoma that arose on the chest. This study shows that cutaneous squamous cell carcinomas of the head and neck in patients with chronic lymphocytic leukemia/small lymphocytic lymphoma are often high grade and have the potential for recurrence and metastasis.