A possible pitfall of Mohs surgery in collision tumor diagnosis: A case of a squamous cell carcinoma of the scalp overlying a metastatic breast lesion of the skull

Invasive ductal carcinoma of breast and squamous cell carcinoma of anterior chest wall-A rare collision

Collision tumors are two distinct neoplasms seen together in same anatomic site. Management of such rare entity still lacks standardization with unknown prognosis. Here we are presenting one such rare case of invasive ductal carcinoma of breast and squamous cell carcinoma of anterior chest wall in a 31-year-old lady.