Soft Tissue B-Cell Lymphoma, Unclassifiable, with Features Intermediate between Diffuse Large B-Cell Lymphoma and Burkitt's Lymphoma Diagnosed by Fine Needle Aspiration Cytology
taken. Cytomorphological findings were as follows: a mixed cell population of lymphoid cells consisting mainly of centroblasts with dark blue cytoplasm and cytoplasmic vacuoles, as well as some centrocytes and immunoblasts. A small number Dear Editor, We present a case of B-cell lymphoma, unclassifiable (B-UNC), with features intermediate between diffuse large B-cell lymphoma (DLBCL) and Burkitt’s lymphoma (BL). The B-UNC/BL/DLBCL type belongs to the heterogeneous category that does neither meet the criteria for classical BL nor for DLBCL, and it is usually characterized by complex karyotypes, aggressive behavior and a poor prognosis [1–4] . An 81-year-old male had a 3-month history of severe pain and slight thickness in the left thoracic paravertebral region ( fig. 1 a). His symptoms were initially misdiagnosed as degenerative thoracic kyphoscoliosis which was treated with physical therapy. Since the pain did not diminish, he was sent for an ultrasound (US) examination and a fine needle aspiration (FNA) analysis of the described lesion. A cytological analysis revealed only a few scattered atypical medium-sized lymphatic cells and peripheral blood; therefore, additional samples were taken. A psychical examination was also performed. In addition, an enlarged lymph node was found in the right axilla, from which samples were Received: February 16, 2015 Accepted after revision: July 18, 2015 Published online: August 29, 2015