RESUMEN
Intravascular large B-cell lymphoma (IVLBCL) is a rare form of non-Hodgkin B-cell lymphoma which occurs mainly in capillaries and small blood vessels. Successful diagnosis of IVLBCL is challenging since it lacks tumor formation and presents various clinical manifestations. An 82-year-old Asian female patient presented to our emergency department with a history of general fatigue, weight loss, and fever for two weeks. The patient's random skin biopsy was negative, and her bone marrow biopsy revealed hemophagocytic syndrome with no obvious involvement of lymphoma cells. Gallium scintigraphy showed mild uptake in the uterus, pelvis, and spine. The repetitive bone marrow biopsy result and the endometrial cytology/biopsy were negative; however, the pelvic MRI was compatible with lymphoma, revealing lesions in the corpus uteri, pelvis, and vertebral body. After laparoscopic-assisted vaginal total hysterectomy and bilateral salpingo-oophorectomy, the diagnosis of the Asian variant of IVLBCL was made. Although total hysterectomy remains controversial for elderly patients with declining performance status, we could successfully diagnose the condition and initiate the treatment. The patient's general condition improved soon after starting rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone regimen on day 26, and she was discharged on day 45.