Primary squamous cell carcinoma of the breast in a young woman--a case report and review of literature.

A thirty-four years old woman presented with pure squamous cell carcinoma of the breast, a very rare occurrence in the younger age group. A simple mastectomy with axillary clearance was performed, followed by adjuvant radiotherapy & chemotherapy. The patient is doing well, with no evidence of recurrence thirty months (2 1/2 years after the treatment. Primary pure squamous cell carcinoma of the breast is a very rare disease. The exact histogenesis still remains obscure. There seems to be no specific prognostic correlation with the morphological characteristics of squamous cell carcinoma of the breast. The clinical behaviour of this tumor is also uncertain. Thus, further study is required to determine whether primary pure squamous cell carcinoma of the breast is to be treated as a separate entity or as the common type of breast cancer (i.e. adenocarcinoma or adenocarcinoma with squamous metaplasia.)