Purpose: To determine characteristic magnetic resonance (MR) imaging features of solitary necrotic nodule of the liver.
Materials And Methods: MR images features of thirty-two patients (17 men, 15 women; mean age, 43 years; range, 24-76 years) with pathologically proved solitary necrotic nodule of the liver were retrospectively analyzed for number, size, signal intensity features and enhancement patterns.
Results: A total of 33 lesions were identified. The mean diameter was 2.3cm (range 1.0-4.5cm). Thirty lesions (90.9%) were 1.0-3.0cm in diameter and only 3 lesions (9.1%) were larger than 3.0cm. On T1-weighted images, solitary necrotic nodule of the liver appeared hypointense in 31 lesions (93.9%) and isointense in 2 lesions (6.1%). On T2-weighted images, 12 (36.4%) lesions were hyperintense, 15 (45.4%) were isointense or invisible and 6 (18.2%) were hypointense. After injection of gadopentetate dimeglumine, all lesions were hypointense and none of them showed enhancement.
Conclusion: Solitary necrotic nodule of the liver is usually small with the size not exceed 3.0cm in diameter. Absence of enhancement on all dynamic phase after gadopentetate dimeglumine administration may be most characteristic feature of solitary necrotic nodule of the liver on MR images, which may help discriminate this entity from metastatic liver tumors and intrahepatic cholangiocarcinoma.
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http://dx.doi.org/10.1016/j.ejrad.2011.01.079 | DOI Listing |
Pediatrics
January 2025
Department of Respiratory Medicine, Shizuoka City Shizuoka Hospital, Shizuoka, Japan.
Pleural tuberculoma is often observed during treatment for tuberculous pleurisy; however, this condition is rarely found as a solitary pleural nodule in patients without a history of tuberculosis treatment, and no cases have been reported in children. We report a case of a 12-year-old boy with pleural tuberculoma presenting as a solitary mass. He had a fever and cough that prompted chest radiography, which revealed a mass in the right lung.
View Article and Find Full Text PDFNeurosurg Rev
January 2025
Department of Neurological Surgery, University of Virginia, Charlottesville, USA.
Resection is often the primary treatment for large brain tumors but is less practical for multiple brain metastases (BM). Current guidelines recommend stereotactic radiosurgery (SRS) for untreated BMs or following the surgical removal of a solitary BM to reduce the risk of local tumor recurrence. Preoperative SRS (pre-SRS) shows promise with fewer complications and more precise targeting, but it lacks tissue diagnosis and may hinder wound healing.
View Article and Find Full Text PDFJ Vasc Interv Radiol
December 2024
Department of Radiology, Section of Vascular and Interventional Radiology, Northwestern University, Chicago, IL; Department of Medicine, Division of Hematology and Oncology, Northwestern University, Chicago, IL; Department of Surgery, Division of Organ Transplantation, Northwestern University, Chicago, IL. Electronic address:
Purpose: To validate the safety and efficacy of radiation segmentectomy (RS) and modified radiation lobectomy (mRL) in intrahepatic cholangiocarcinoma (iCCA) and to evaluate long-term outcomes in patients with unresectable, early-stage iCCA.
Materials And Methods: A single-institution, retrospective study of patients with unresectable, solitary iCCA without extrahepatic disease or vascular involvement (stage I) treated with RS and mRL was performed. Fifteen patients met inclusion criteria (median age 65.
Quant Imaging Med Surg
December 2024
Chongqing Medical University, Chongqing, China.
Background: The value of Liver Imaging Reporting and Data System (LI-RADS) radiological features and tumor three-dimensional volumetric quantification in preoperative magnetic resonance imaging (MRI) for predicting the vessels encapsulating tumor clusters (VETC) pattern of solitary hepatocellular carcinoma (HCC) is unknown. This study aimed to assess the value of these indicators for predicting the VETC pattern of solitary HCC.
Methods: In total, 36 patients with HCC were selected from a cohort containing 126 patients for further data evaluation.
Eur J Radiol
December 2024
Department of Radiology, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy. Electronic address:
Solitary necrotic nodule of the liver (SNNL) is a rare and benign liver lesion often discovered incidentally. Despite its occurrence, the exact cause of SNNL remains unknown, with various theories proposing traumatic, infectious, degenerative or transformative origins. The variable imaging characteristics of SNNLs frequently lead to misdiagnosis as malignant tumors, prompting patients to undergo unnecessary and high-risk procedures such as biopsies and surgeries.
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