Split-bolus single scan CTA for evaluation of mesenteric ischemia.

Purpose: To evaluate split-bolus single scan CTA protocol for evaluation of acute mesenteric ischemia.

Materials And Methods: In this HIPAA-compliant IRB-approved study, consecutive patients evaluated for mesenteric ischemia between 11/2015 and 10/2016 were included. Patients scanned prior to 4/2016 were scanned with multiphasic CTA protocol and after with split-bolus single scan CTA.

BWH emergency radiology--surgical correlation: small-bowel GI stromal tumor perforation.

We present the radiological and intraoperative correlation of a large necrotic gastrointestinal stromal tumor (GIST) with features of a tumor-bowel fistula and perforation in a 49-year-old woman presenting to the emergency department with a 4-day history of worsening abdominal pain, vomiting, and diarrhea. The patient underwent urgent exploratory laparotomy for partial resection of the small bowel, with primary anastomosis. The purpose of this article is to emphasize the importance for emergency radiologists to be familiar with this entity and its possible complications to help guide the surgeons in the patient's management.

Hypervascular mediastinal masses: action points for radiologists.

Hypervascular mediastinal masses are a distinct group of rare diseases that include a subset of benign and malignant entities. Characteristic features and known association with syndromes and genetic mutations assist in achieving a diagnosis. Imaging allows an understanding of the vascularity of the lesion and should alert the radiologist and clinician to potential hemorrhagic complications and avoid percutaneous CT guided biopsies.

Teratoma with malignant transformation: report of three cases and review of the literature.

Teratoma with malignant transformation is an uncommon, very aggressive germ cell tumor that has undergone transformation of a somatic teratomatous component to a histologic type identical to a somatic malignancy. We review the clinical presentation, imaging appearances, and prognosis of this entity and highlight its aggressive behavior by reporting on three patients with metastatic testicular nonseminomatous germ cell tumor with histologically proved malignant transformation.

Peritoneal lymphomatosis: CT and PET/CT findings and how to differentiate between carcinomatosis and sarcomatosis.

Peritoneal lymphomatosis is a rare manifestation of lymphoma, seen most frequently with non-Hodgkin lymphoma, and it is important to be familiar with this condition, because early diagnosis directly affects the management of patients. This review illustrates the spectrum of imaging findings in peritoneal lymphomatosis, highlighting the use of positron emission tomography/computed tomography, showing common and uncommon subtypes of lymphoma associated with this entity, and how to differentiate it from peritoneal carcinomatosis and peritoneal sarcomatosis.

The role of demyelination in neuromyelitis optica damage: diffusion-tensor MR imaging study.

Purpose: To test the hypothesis that white matter damage in neuromyelitis optica (NMO) is more extensive than previously described and likely includes involvement of normal-appearing white matter and to explore by using diffusion-tensor (DT) imaging whether white matter lesions are not only related to wallerian degeneration but are also caused by demyelination.

Materials And Methods: Seventeen patients with NMO (mean age, 45 years; 14 women) were compared with 17 sex- and age-matched control subjects. The institutional review board approved the study, and all subjects gave written informed consent.

Sternal metastasis as an initial presentation of renal cell carcinoma: a case report.

Renal cell carcinoma accounts for 85% of all solid renal tumors in adults. Nearly one quarter of patients has distant metastasis at presentation while another 50% develop metastasis during follow-up. A small percentage of these are solitary metastasis.

Semi-invasive pulmonary aspergillosis in an immunosuppressed patient: a case report.

Background: The authors present the high-resolution computed tomography findings of an immunosuppressed patient with semi-invasive pulmonary aspergillosis.

Case Presentation: The main finding consisted of irregular, thick-walled cavity in the right upper lobe and a mass with soft-tissue attenuation within it and thickening of adjacent pleura. Additional findings were bronchial wall thickening associated with a 'tree-in-bud' pattern.

Telangiectatic adenoma - computed tomography and magnetic resonance findings: a case report and review of the literature.

Telangiectatic adenoma is a new classification of a hepatic lesion. It was previously named telangiectatic focal nodular hyperplasia but it is in fact true adenoma with telangiectatic features. We report here a case of telangiectatic adenoma in a 72-year-old woman.

Pulmonary Kaposi sarcoma in a human immunodeficiency virus - infected woman: a case report.

Approximately 90% to 95% of Kaposi sarcoma cases occur in human immunodeficiency virus - infected homosexual and bisexual men. Pulmonary Kaposi sarcoma is uncommon in women, and rarely considered as a potential cause of diffuse lung disease in women with acquired immunodeficiency syndrome. The disease is usually mistaken clinically for pulmonary infection.