Radiologically guided percutaneous core needle biopsy of the spleen: a reliable and safe diagnostic procedure for neoplastic and reactive conditions.

RATIONALE: Percutaneous core needle biopsy (CNB) of the spleen is rarely performed, due to concerns about its complications and low diagnostic yield. However, this procedure represents a potentially useful diagnostic tool, especially in patients with splenomegaly and no definitive diagnosis after a clinical and radiological work-up. METHODS AND RESULTS: We report the data on a cohort of 45 radiologically guided percutaneous core needle biopsies of the spleen from 44 patients performed at two centres. Platelet count and prothrombin time were within normal limits in all patients at the time of the procedure. The biopsy was ultrasound-guided in all cases except one, which was guided by computed tomography. An 18G needle was used in 82% of the cases, followed by 16G (10.2%) and 20G (7.8%) needles. The biopsy provided sufficient material for histological examination (including immunohistochemical studies) in 41 cases (91.1%). Haematological malignancies were most commonly diagnosed (52.3%); diffuse large B cell lymphoma (DLBCL) was the most frequent, followed by splenic marginal zone lymphoma (SMZL). For the most recent cases of DLBCL, the CNB provided sufficient material for fluorescence in-situ hybridisation to assess the status of MYC, BCL2 and BCL6. This allowed the identification of a case of high-grade B cell lymphoma with MYC and BCL2 rearrangement. Major complications were not reported; minor complications occurred in three cases (6.7%). CONCLUSIONS: Our data demonstrate that radiologically guided percutaneous CNB should be considered as a valid diagnostic tool, as it provides quick and reliable histological diagnoses avoiding the complications and risks of splenectomy.

A case of hepatic, renal and duodenal penetration by a Celect inferior vena caval filter.

Inferior vena caval (IVC) filters are used as a mechanical option for the treatment of venous thromboembolism (VTE) when standard anticoagulation therapy is either contraindicated or VTE recurs despite adequate anticoagulation. Filters are not without risk, however. Reported complications include filter migration and fracture of filter components, leading to IVC rupture and penetration into pericaval tissues (notably kidney, heart, pericardium, thoracic cavity, liver, bowel and aorta). Here we describe an extreme case of multiple organ penetration by a standard Celect caval filter.

Aneurysmal rupture of the costo-cervical trunk in a patient with neurofibromatosis type 1: A case report.

INTRODUCTION: Rupture of blood vessels associated with neurofibromatosis type 1 (NF-1) is a rare but life threatening complication. We report the first case of an aneurysmal rupture from the costocervical trunk in a NF-1 patient treated by endovascular embolisation. PRESENTATION OF CASE: A 43 year-old gentleman with a past medical history of NF-1 presented with sudden onset left sided neck swelling. A computed tomography (CT) revealed a large cervical haematoma, which was causing airway compromise, requiring the patient to be intubated. Percutaneous embolisation of the bleeding vessel from the costo-cervical trunk was performed with successful haemostasis and no immediate complications. A repeat CT scan showed a reduction in the original cervical haematoma. However, six days post embolisation, the patient arrested with complete whiteout of the left hemithorax. DISCUSSION: CT angiography is the gold standard for diagnosis of an aneurysmal rupture in NF-1 patients, and percutaneous embolisation is the preferred modality in patients who are haemodynamically stable due to arterial fragility and high intra operative mortality rates. The increasing haemothorax could be explained by the original cervical haematoma draining down into the pleural space, or the possibility of a new second bleed. CONCLUSION: This is the first reported episode of bleeding from the costocervical trunk in NF-1 patients. Ruptured aneurysms require urgent CT angiography, if haemodynamically stable, and further input from the vascular surgeons and vascular radiologists.