Recurrence of linear basal cell carcinoma.

Linear basal cell carcinoma (LBCC) is a rare morphologic variant of basal cell carcinoma. We report a case of a patient with a recurrent linear lesion on the supraclavicular neck with prior repeated mild trauma to the area. The patient was diagnosed with recurrent LBCC after a prior excision of an LBCC in the same area. A review of the literature was performed, and the demographics, anatomic location, histologic subtype, treatment methods, and frequency of recurrence for all reported cases of LBCC were summarized. Because of the likelihood of subclinical spread, LBCC should be regarded as a high-risk subtype. As such, Mohs micrographic surgery or excision with complete circumferential peripheral and deep margin assessment is recommended as first-line treatment.