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Differentiation of intrapancreatic accessory spleen from pancreatic neuroendocrine tumor using MRI R2.
Abdom Radiol (NY)
January 2025
Severance Hospital, Seoul, Republic of Korea.
Purpose: To evaluate the performance of R2* in distinguishing intrapancreatic accessory spleens (IPASs) from pancreatic neuroendocrine tumors (PNETs).
Methods: Two radiologists (R1 and R2) retrospectively reviewed the MRIs of 20 IPAS and 20 PNET patients. IPASs were diagnosed with uptake on 99mTc labeled heat-damaged red blood cell scintigraphy or characteristic findings on CT/MRI and ≥ 12 month-long-stability.
Influences of the second motion probing gradient -value and T2 relaxation time on magnetic resonance diffusion-derived 'vessel density' (DDVD) calculation: the examples of liver, spleen, and liver simple cyst.
Quant Imaging Med Surg
January 2025
Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China.
Background: Magnetic resonance (MR) diffusion-derived 'vessel density' (DDVD) is calculated according to: DDVD = Sb0/ROI - S/ROI, where S and S refer to the tissue signal when -value is 0 or 2 s/mm. S and ROI can also be approximated by other low -values diffusion-weighted imaging (DWI). This study investigates the influence of the second motion probing gradient -value and T2 on DDVD calculations of the liver, spleen, and liver simple cyst.
View Article and Find Full Text PDFFatal Waterhouse-Friderichsen Syndrome caused by Streptococcus pneumoniae in a vaccinated adult with traumatic splenectomy: A case report.
Leg Med (Tokyo)
February 2025
University of Modena and Reggio Emilia, Italy. Electronic address:
Waterhouse-Friderichsen Syndrome (WFS) is a rare but life-threatening condition characterized by massive adrenal hemorrhage. WFS represents one of the features of the Overwhelming Post-Splenectomy Infection, which occurs any time after spleen removal and is recognized as the most serious complication in asplenic patients. We report a fatal case of WFS resulting from Streptococcus pneumoniae infection in a vaccinated and splenectomized patient.
View Article and Find Full Text PDFObjectives The primary objective of this study is to describe and evaluate the diagnostic performance of the hyperdense right hemidiaphragm sign (HRHS) as a novel radiological indicator for diffuse fatty infiltration of the liver on non-enhanced CT (NECT) scans. This includes assessing its sensitivity, specificity, positive predictive value, and negative predictive value, and comparing these metrics with other established NECT signs. Methods This cross-sectional multicenter retrospective study included all patients over 12 years of age who underwent both abdominal MRI and NECT scans of the abdomen within a period not exceeding six months at two tertiary hospitals (The Royal Hospital and Armed Forces Hospital, Muscat, Sultanate of Oman) between January 2010 and December 2022.
View Article and Find Full Text PDFAccessory splenic infarction presenting as acute abdominal pain: A case report.
Int J Surg Case Rep
January 2025
Emergency Medicine Department, Lebanese American University Medical Center, Beirut, Lebanon. Electronic address:
Introduction: Accessory spleens are a common anatomical variant, consisting of ectopic splenic tissue present in different locations in the peritoneal cavity. Typically asymptomatic, the presence of these tissue grows to be of clinical importance when complicated by infarction, rupture, or torsion.
Presentation Of Case: We report the case of a 36-year-old female that presented to the Emergency Department for diffuse abdominal pain and was found to have a partially ruptured splenule secondary to a venous infarct on abdominal computed tomography scan.
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