Fig. 6
From: Spectrum of imaging findings in AIDS-related diffuse large B cell lymphoma
CECT of the pelvis in soft tissue window (a) and bone window (b). A mixed lytic and sclerotic process involving the sacrum and extending to the iliac bones through the sacroiliac joints is seen. There are associated pathological fractures and a large extra osseous soft tissue component. There are also enlarged necrotic bilateral pelvic sidewall and inguinal lymph nodes