Endoscopic surgery using an expanded endonasal approach now allows surgical access to an increasing range of parasellar, suprasellar, clivus, and petrous apex lesions. Accurate preoperative planning requires proper interpretation of CT and MRI results. It is essential to identify important anatomic landmarks and to recognize the appearance of common lesions and pseudolesions. Postoperative imaging must evaluate for residual tumors and identify iatrogenic conditions.
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Sci Rep
December 2024
Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
Accidental bending of the snare sheath occasionally occurs during cold snare polypectomy (CSP). We aimed to demonstrate whether snare bending reduces resection ability and, if it does, what causes this reduction. Using currently available CSP snares and prototype snares, we investigated changes in the resection ability of bent snares as well as the stiffness of their sheaths and wire spindles.
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Radiol Case Rep
February 2025
College of Medicine, QU Health, Qatar University, Doha, 2713, Qatar.
Aberrant right gastric veins (ARGV) represent rare anatomical variations that can result in hepatic pseudolesions, mimicking malignancies due to their atypical drainage directly into the liver parenchyma. This case highlights a 44-year-old woman initially presenting with a breast mass incidentally found to have an ARGV-related pseudolesion in hepatic segment IVa. ARGV is clinically significant as it can alter hepatic blood flow dynamics, leading to hyperdense or hypodense regions on imaging.
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Acta Radiol
September 2024
Department of Radiology, Leonard M. Miller School of Medicine, Miami, FL, USA.
Pseudolesions in bone and muscle are encountered mostly incidentally in routine imaging studies, especially due to the recent advancements on many different imaging modalities. These lesions can be categorized into the following categories: normal variants; congenital; iatrogenic; degenerative; and postoperative. In this review, we discuss the many different radiological characteristics of musculoskeletal pseudolesions that appear on imaging, which can prevent non-essential additional studies.
View Article and Find Full Text PDFPostmortem contrast-enhanced computed tomography via direct large-vessel puncture.
Leg Med (Tokyo)
July 2024
University of Fukui School of Medical Sciences, Department of Forensic Medicine, Japan; Hokkaido University, Faculty of Medicine, Department of Forensic Medicine, Japan. Electronic address:
The aim of this study was to assess the usefulness of postmortem contrast-enhanced CT (PMeCT) performed via direct large-vessel puncture when routine postmortem CT suggests a vascular lesion as the cause of death. PMeCT was performed in 9 cases (4 male, 5 female) with a mean age of 76 years (range 52-92) at the time of death. The mean time elapsed since death was 29.
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