Bowel obstruction complicated by ischemia: analysis of CT findings.

Purpose: To analyze CT signs of bowel ischemia in patients with surgical bowel obstruction, and thereby improve CT diagnosis in this common clinical scenario. Surgical and histopathological findings were used as the reference standard.

Methods: We retrospectively analyzed CT findings in patients brought to surgery for bowel obstruction over 13 years.

Diagnostic Performance of Margin Features in Thyroid Nodules in Prediction of Malignancy.

Objective: The purpose of this study was to evaluate thyroid nodule margins for specific morphologic features and determine the diagnostic performance of these features in differentiating papillary carcinoma from benign thyroid nodules.

Materials And Methods: Nodules measuring 1-3 cm in largest diameter that had been evaluated with high-resolution ultrasound (12-18 MHz) and ultrasound-guided biopsy with definitive pathologic diagnosis were analyzed. Three blinded board-certified readers evaluated high-resolution images of each nodule for jagged edges, lobulated borders, and curved borders along their margins.

Sonographic-Pathologic Correlation for Punctate Echogenic Reflectors in Papillary Thyroid Carcinoma: What Are They?

Objectives: It is commonly held that punctate nonshadowing echogenic foci on sonography, often termed microcalcifications, represent psammoma bodies. We aimed to determine the validity of this supposition by correlating the presence of punctate echogenic foci on sonography with their presence at histopathologic examination.

Methods: We examined 51 nodules (surgically proven papillary thyroid carcinoma) by sonography and histopathologic examination.

Sonographic Detection of Extracapsular Extension in Papillary Thyroid Cancer.

Objectives: To identify and evaluate sonographic features suggestive of extracapsular extension in papillary thyroid cancer.

Methods: Three board-certified radiologists blinded to the final pathologic tumor stage reviewed sonograms of pathologically proven cases of papillary thyroid cancer for the presence of extracapsular extension. The radiologists evaluated the following features: capsular abutment, bulging of the normal thyroid contour, loss of the echogenic capsule, and vascularity extending beyond the capsule.

Watershed Hepatocellular Carcinomas: The Risk of Incomplete Response following Transhepatic Arterial Chemoembolization.

Purpose: Hepatocellular carcinomas (HCCs) bridging two or more Couinaud-Bismuth segments of the liver ("watershed tumors") can recruit multiple segmental arteries. The primary hypothesis of this study was that fewer watershed tumors show complete response (CR) after chemoembolization, with shorter time to local recurrence. Secondary analysis on the impact on transplantation eligibility in the presence of progressive disease was also performed.

Atypical thyroid cancers on sonography.

The management of thyroid nodules is a common clinical problem. Thyroid nodules are present in up to 50% of the adult population. However, thyroid malignancy is rare, occurring in only 5% to 15% of nodules.

Tandem stem cell rescue as consolidation therapy for high-risk neuroblastoma.

Background: Despite aggressive treatment for high-risk neuroblastoma (NB), event-free survival (EFS) remains <40%. In single arm studies, intensifying therapy with high-dose chemotherapy and tandem autologous stem cell rescue (HDC/SCR) improved outcome. We retrospectively describe our institutional experience in using HDC/SCR for patients with high-risk NB, focusing on outcome and acute toxicities.