ObjectiveTo determine the rates of diagnostic success and complications of computed tomography (CT)-guided percutaneous biopsy of bone lesions suspected for malignancy.Materials and MethodsRetrospective study including 186 cases of CT-guided percutaneous biopsies of bone lesions in the period from January, 2010 to December, 2012. All the specimens were obtained with 8-10 gauge needles. The following data were collected: demographics, previous history of malignancy, data related to the lesion, to the procedure, and to histological results.ResultsMost patients were women (57%), and the mean age was 53.0 ± 16.4 years. In 139 cases (74.6%), there was diagnostic suspicion of metastasis and the most common primary tumors were breast (32.1%) and prostate (11.8%). The bones most commonly involved were spine (36.0%), hip (32.8%) and long bones (18.3%). Complications occurred in only three cases (1.6%) including bone fracture, paresthesia with functional impairment, and needle breakage requiring surgical removal. The specimens collected from 183 lesions (98.4%) were considered appropriate for diagnosis. Malignant results were more frequently found in patients who had a suspected secondary lesion and history of known malignancy (p < 0.001), and in patients who underwent PET/CT-guided procedures (p = 0.011).ConclusionCT-guided percutaneous biopsy is a safe and effective procedure for the diagnosis of suspicious bone lesions.

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Peristomal variceal bleeding due to portal hypertension is an entity that has rarely been reported with 3%-4% risk of death. A 68-year-old woman who had undergone a palliative colostomy (colorectal carcinoma) presented with a massive hemorrhage from the colostomy conduit. Considering her oncological status with medial and right hepatic veins thrombosis due to liver metastasis invasion, an emergency transhepatic coil embolization was successfully performed. Standard treatment modality for these cases has not been established. Percutaneous transhepatic coil embolization of varices is a safe and effective choice in patients who present with life threatening bleeding and exhibit contraindications to transjugular intrahepatic portosystemic shunt.

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Transrectal ultrasonography-guided biopsy plays a key role in prostate sampling for cancer detection. Among interventional procedures, it is one of the most frequent procedures performed by radiologists. Despite the safety and low morbidity of such procedure, possible complications should be promptly assessed and treated. The standardization of protocols and of preprocedural preparation is aimed at minimizing complications as well as expediting their management. The authors have made a literature review describing the possible complications related to transrectal ultrasonography-guided prostate biopsy, and discuss their management and guidance to reduce the incidence of such complications. Keywords: Prostate; Needle biopsy; Interventional ultrasonography; Complications.A biópsia transretal da próstata guiada por ultrassonografia tem papel fundamental na coleta de amostra para o diagnóstico do câncer prostático. Dentro do contexto intervencionista, constitui um dos principais procedimentos realizados pelo radiologista. Embora seja segura e com baixa morbimortalidade, complicações devem ser prontamente avaliadas e tratadas. O uso da padronização das condutas e do preparo antes do procedimento tem a finalidade de minimizar as complicações, assim como agilizar o seu tratamento. Dessa forma, o objetivo deste trabalho foi fazer uma revisão da literatura sobre as complicações relacionadas à biópsia transretal de próstata guiada por ultrassonografia, discutir seu manejo e orientações para reduzir sua incidência. Unitermos: Próstata; Biópsia por agulha; Ultrassonografia de intervenção; Complicações. AbstractResumo