Spontaneous regression of two giant basal cell carcinomas in a single patient after incomplete excision.

BACKGROUND Spontaneous regression of small basal cell carcinoma has been reported. For giant basal cell carcinoma, however, no spontaneous regression has been described to date. CASE REPORT We present a patient with two independent giant basal cell carcinomas over the left clavicle and the lower back, measuring 7 x 12 cm and 18 x 20 cm, respectively. Both tumors were excised incompletely (R2) and the patient refused followup resections. After 52 and 16 months, respectively, no signs of recurrence were observed. CONCLUSION; Incompletely excised giant basal cell carcinomas can regress spontaneously. A watch-and-wait approach after incomplete resection may be pragmatic to avoid mutilating follow-up resections in patients refusing further surgery.