Cylindroma of the Breast: A Rare Case Report
The present case report is about a 61-year-old woman who presented with freely mobile, firm, non-tender right breast mass of 2 cm diameter in upper inner quadrant since 4 years. There were no skin or nipple changes and no axillary lymphadenopathy. The patient had no significant family history or skin nodules. Mammography showed a well-circumscribed mass in the 1 o‘clock position of the right breast []. According to The Breast Imaging Reporting and Data System the score was 3 which mean that mammogram was probably normal, but a repeat was suggested. Ultrasonography showed well-defined heterogeneous mass noted in the right breast. Subsequently, fine-needle aspiration cytology was done using 22-G needle. Papanicolaou staining was done. Smears show numerous basaloid cells with scanty cytoplasm and round nuclei seen lying in jigsaw puzzle pattern []. Diagnosis of “probably benign” (C2) was made and biopsy was advised. The nodule was excised. Histological sections stained by hematoxylin and eosin revealed nests of basaloid cells arranged in a complex jigsaw puzzle like pattern. Many nests are surrounded by dense eosinophilic basement membrane material and thus confirmed the diagnosis of cylindroma []. The patient was followed for 12 months, which remained uneventful.