Case Report of an Unusual Breast Collision Tumour in a Nigerian Woman Breast Collision Tumour in a Nigerian woman

Résumé

Breast carcinoma is a common malignancy worldwide and in our environment. However, the occurrence of squamous cell carcinoma (SCC) of the skin of the breast is rare, more so, in collision with invasive breast carcinoma of no special type (IBC, NST). Hence, we present this rare occurrence in a 55-year-old Nigerian woman who presented with an ulcerated breast mass whose pre-operative core biopsy was reported as SCC and post-mastectomy biopsy was reported as a collision of SCC and IBC, NST. She had skin grafting and chemotherapy, with proposed radiotherapy. She was lost to follow up. Surgeons must be aware of this entity, although rare. Since there is no universally accepted guideline for the treatment of breast collision tumour, management should be guided by the most aggressive component in the collision.