CATATONIA FOLLOWING IFOSFAMIDE CHEMOTHERAPY IN A PATIENT WITH HISTIOCYTIC SARCOMA: A RARE NEUROPSYCHIATRIC COMPLICATION Hüseyin Koçak; Esra Nur Saygeçitli; Ali Turunç; Birol Güvenç;

CD20 Antigen Loss in T-cell/Histiocyte-Rich Diffuse Large B-cell Lymphoma Following R-CHOP Therapy: A Case of Immune Escape Ay¿egül Ezgi Çetin; Ali Turunç; Berrak Ça¿la ¿enol; Birol Güvenç;

FAMILIAL MULTIPLE MYELOMA: SIBLING CASES WITH DISTINCT CLINICAL MANIFESTATIONS Ali Turunç; Birol Güvenç;