Evaluation of Tru-Cut biopsy in differential diagnosis and challenges in breast adenoid cystic carcinoma on a case basis

Adenoid cystic carcinoma (AdCC) is a very rare low-grade invasive primarily in the breast. The fact that similar patterns can be observed breast carcinomas (IВC) such as AdCC and ductal situ (DCIS) Tru-Cut biopsies creates difficulties differential diagnosis. Case presentation. A 70-year-old female patient was admitted to our outpatient clinic with complaint of palpable mass left subareolar region. In light microscopy examination 3 tissue samples size measurements, IBC-like tubular structures, some which were formed by tiny uniform cells narrow cytoplasm, eosinophilic material, solid nest structures suggesting DCIS focal areas observed. Immunohistochemical showed continuity myoepithelial p63 calponin, epithelial cells, staining Cd117 CK7. No progesterone, estrogen, Cerbb2. rate Ki-67 determined 2 percent. diagnosis made these findings. Conclusions. It important search for different addition double cell population pay attention material lumens contain may cause IBC error.