Mucoepidermoid Carcinoma of Breast Presenting as Abscess-like Pus Discharging Mass; A Rare Tumour With Unusual Presentation

Mucoepidermoid carcinoma (MEC) breast is a very rare triple negative breast cancer with relatively better overall prognosis, with histomorphological and immunohistochemical features similar to the salivary gland MEC. The literature suggests that it also carries molecular characteristics similar to the salivary gland MEC.

A 73-years-old woman presented with complaints of painful, foul smelling pus discharging mass in the right breast. The patient underwent therapeutic incision and drainage along with diagnostic biopsy. On histopathology, the diagnosis made was high grade MEC.

Primary MEC is a very rare triple negative breast cancer (TNBC) usually with much better survival outcome in comparison to other TNBCs. However, the index case had locally advanced disease with unique presentation leading to an alternative initial management