We describe a case of a surgically proven intraosseous venous anomaly of the fibula in a patient who presented with ankle pain and swelling with deep venous thrombosis. MRI, including gadolinium-enhanced MR angiography, provides a less invasive means than conventional venography for diagnosing these lesions and assessing venous patency while also allowing for evaluation of extravascular structures.

Clinically evident colonic metastasis from renal cell carcinoma (RCC) is rare. In the present study a hypervascular sigmoid mass was demonstrated on arterial-phase helical CT using a water enema in a patient who had suffered left nephrectomy 8 years previously for RCC. The intense and early enhancement of the lesion suggested the possibility of a solitary colonic metastasis from RCC, a diagnosis which was pathologically confirmed.

No abstract

Osteoblastomatosis (OBLT), also referred to as multifocal osteoblastoma (OB), is an unusual and recently described entity consisting of multifocal tumors histologically consistent with osteoblastoma and osteoid osteoma (OO) but radiologically mimicking a vascular bone lesion. OBLT treatment is based on aggressive procedures, such as amputation, en bloc resection, and chemotherapy. Only one previously reported case was successfully treated following a multimodal approach consisting of curettage, cryotherapy, intravenous bisphosphonates, and radiofrequency ablation. We present a case of OBLT that may have been cured by CT-guided percutaneous radiofrequency ablation.