When the Appendix Is Not Seen on Ultrasound for Right Lower Quadrant Pain: Does the Interpretation of Emergency Department Physicians Correlate With Diagnostic Performance?

A survey was administered to 166 academic emergency department (ED) physicians to determine their interpretation and practice after receiving an ultrasound (US) report with nonvisualization of the appendix (NVA). Annual incidence of reported NVA from 2 academic hospitals was calculated for 2002-2013. A retrospective review of the same hospitals revealed that 291 (17.

Primary cystic peritoneal masses and mimickers: spectrum of diseases with pathologic correlation.

Cystic lesions within the peritoneum have been classified classically according to their lining on histology into four categories-endothelial, epithelial, mesothelial, and others (germ cell tumors, sex cord gonadal stromal tumors, cystic mesenchymal tumors, fibrous wall tumors, and infectious cystic peritoneal lesions). In this article, we will proceed to classify cystic peritoneal lesions focusing on the degree of radiological complexity into three categories-simple cystic, mildly complex, and cystic with solid component lesions. Many intra-abdominal collections within the peritoneal cavity such as abscess, seroma, biloma, urinoma, or lymphocele may mimic primary peritoneal cystic masses and need to be differentiated.

Small renal oncocytomas: is segmental enhancement inversion a characteristic finding at biphasic MDCT?

Objective: The purpose of this study was to retrospectively determine whether segmental enhancement inversion was a common and characteristic finding in small (≤ 4 cm) renal oncocytomas on biphasic contrast-enhanced CT.

Materials And Methods: This retrospective case-control study included 16 patients with 16 renal oncocytomas and 15 control patients with 15 renal cell carcinomas (RCCs), matched for age and sex, who underwent biphasic contrast-enhanced MDCT at our institution. Three reviewers independently analyzed each tumor for enhancement patterns on MDCT, including the presence or absence of segmental enhancement inversion, homogeneity, and phase of peak enhancement.

Ultrasound assessment of gastric content and volume.

Background: Aspiration of gastric contents can be a serious perioperative complication, attributing up to 9% of all anesthesia-related deaths. However, there is currently no practical, noninvasive bedside test to determine gastric content and volume in the perioperative period.

Methods: The current study evaluates the feasibility of using bedside ultrasonography for assessing gastric content and volume.

Renal cortical lesions in patients with autoimmune pancreatitis: a clue to differentiation from pancreatic malignancy.

Aim: To describe the occurrence of renal cortical lesions (RCLs) in patients with autoimmune pancreatitis (AIP).

Methods: This retrospective study was approved by our research ethics board; informed consent was waived. Systematic search of CT scan reports in 5-year interval yielded 17 patients with AIP (male:female; 11:6, age 18-80 years).

Hepatic subcapsular steatosis in response to intraperitoneal insulin delivery: CT findings and prevalence.

Objective: The aim of this study was to investigate the CT findings and prevalence of hepatic subcapsular steatosis in patients undergoing peritoneal dialysis with intraperitoneal insulin delivery.

Conclusion: Hepatic subcapsular steatosis appeared as subcapsular nodules and often rindlike areas of low attenuation in seven (18%) of 39 patients who received intraperitoneal insulin with their peritoneal dialysate. Cessation of intraperitoneal insulin therapy led to reversal of the steatosis in three patients.

US of the peritoneum.

Familiarity with the pathophysiology of peritoneal disease is the basis of successful ultrasound (US) study of the peritoneum. The pouch of Douglas, diaphragmatic surfaces, the paracolic gutters, and the regions of the mesentery and omentum should receive careful scrutiny in the patient at risk for a peritoneal disease process. An optimal US technique requires assessment of the entire peritoneum with a transducer selected to reflect the depth of the region of interest.

Dropped gallstones post laparoscopic cholecystectomy mimicking peritoneal seeding: CT and ultrasound features.

Purpose: The purpose of this work was to investigate the ultrasound (US) and CT features of dropped gallstones mimicking peritoneal seeding in patients after laparoscopic cholecystectomy (LCC).

Method: We describe the US and CT features of dropped gallstones mimicking peritoneal seeding in eight patients who underwent LCC. We also conducted a retrospective study of consecutive LCC patients who subsequently had CT to determine the prevalence of this condition.

Multi-detector row helical CT in preoperative assessment of small (< or = 1.5 cm) liver metastases: is thinner collimation better?

Purpose: To determine the value of collimations less than 5 mm in detecting hepatic metastases 1.5 cm or smaller by using multi-detector row helical computed tomography (CT).

Materials And Methods: Thirty-one patients underwent contrast material-enhanced multi-detector row helical CT before hepatic resection in this prospective study.

Cancer of the pancreas: the best image for early detection--CT, MRI, PET or US?

Pancreatic cancer has a poor prognosis, and the best chance for survival is to diagnose the tumour at an early stage. Abdominal ultrasound, computed tomography, magnetic resonance imaging and endoscopic retrograde cholangiopancreatography are the most commonly used radiological techniques for imaging the pancreas. The diagnostic evaluation should be tailored to the individual patient.