Invasive carcinomas of breast constitute a heterogeneous group of lesions in terms of their clinical presentation, radiographic characteristics, pathological features and biological behaviour. The classification is mainly based upon character of growth pattern and cytological features. The radiological findings usually overlap with other invasive types resulting in the under diagnosis of these tumours. Hence, suspicion of primary NEC of breast should prompt immunohistochemical confirmation for appropriate diagnosis. Although appearance on mammography, sonography and MRI could help differentiate these tumours from other malignancies but still histological features with immunohistochemical markers remain the benchmark to confirm these tumours.
Neha Sheoran, Kapil Dev, Monika Goyal and Kavita Saggar