ArticleAbdominal radiology (New York)2026
Focal peliosis hepatis: magnetic resonance imaging manifestations and diffusion characteristics.
Article in Abdominal radiology (New York), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo explore magnetic resonance imaging (MRI) features and diffusion characteristics of focal peliosis hepatis (PH).
methodsClinical data and MRI images of 21 patients with pathologically confirmed focal PH treated at Zhongshan Hospital Fudan University and Weifang People's Hospital from January 2012 to March 2024 were retrospectively analyzed. Image analysis included the number, location, size, shape, signal intensity on plain scans, dynamic enhancement characteristics, and the relationship between the lesions and adjacent blood vessels. The apparent diffusion coefficient (ADC) values of the lesions and surrounding normal hepatic parenchyma were measured and compared for statistical significance. All cases were divided into two groups based on the patients' history of tumor chemotherapy, and the MRI manifestations of the lesions in the two groups were compared for statistical significance.
resultsA total of 26 lesions were identified in 21 patients, with 23 located in the right hepatic lobe and three in the left lobe. The lesions had indistinct borders, and the average diameter ranged from 7.5 to 72.0 mm (mean 25.4 ± 17.8 mm). Of these, 23 lesions exhibited slightly hypointense signal on T1-weighted imaging (T1WI), 1 lesion showed slightly hyperintense signal, and 2 lesions appeared isointense. On T2-weighted imaging (T2WI), 25 lesions showed slightly hyperintense signal, and 1 lesion was isointense. Diffusion-weighted imaging (DWI) showed either isointense or slightly hyperintense signal within the lesions. The mean ADC value of the lesions was (1.499 ± 0.397) × 10⁻
conclusionMRI manifestations of focal PH are distinctive, and the combination with diffusion-weighted imaging may assist in the diagnosis of this condition.
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