A Case of Primary Malignant Lymphoma of the Prostate Gland Presenting as Right Lower Back Pain and Dysuria.

A Case of Primary Malignant Lymphoma of the Prostate Gland Presenting as Right Lower Back Pain and Dysuria. J Nippon Med Sch. 2018;85(4):236-240 Authors: Yasuoka S, Kimura G, Toyama Y, Moriya K, Takahashi K, Matsuoka R, Shibayama K, Obayashi K, Inoue Y, Shindo T, Iigaya S, Endo Y, Akatsuka J, Hayashi T, Nakayama S, Hamasaki T, Inokuchi K, Kondo Y Abstract A 73-year-old man presented with right lower back pain and dysuria. Right hydronephrosis and a large pelvic large mass were seen on computed tomography (CT). Although his prostate-specific antigen (PSA) was 0.5 ng/mL, an irregularly enlarged, stony, hard prostate was palpable on digital rectal examination. A prostate tumor was suspected, and a transrectal prostate biopsy and right transurethral ureteral stent placement were performed. Histological and immunohistochemical studies revealed diffuse large B-cell lymphoma. Positron emission tomography-computed tomography showed abnormal uptake in the stomach, cecum, right obturator lymph nodes, para-aortic lymph nodes, and dorsal left kidney. No abnormal findings were seen on bone marrow histology. Clinical stage IVA was confirmed according to Ann Arbor criteria. The patient achieved a complete response after 8 cycles of combination chemotherapy with rituximab, pirarubicin, cyclophosphamide, vincristine, and prednisolone. PMID: 30259894 [PubMed - in process]
Source: Journal of Nippon Medical School - Category: Universities & Medical Training Authors: Tags: J Nippon Med Sch Source Type: research