Hepatic epithelioid angiomyolipoma: magnetic resonance imaging characteristics.

Autor: Junhao L; Department of Radiology, Shanghai Geriatric Medical Center, Zhongshan Hospital, Fudan University, Shanghai, China.; Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China., Hongxia Z; Department of Radiology, Taizhou Clinical Medical School of Nanjing Medical University (Taizhou People's Hospital), Nanjing, Jiangsu Province, China., Jiajun G; Department of Radiology, Shanghai Geriatric Medical Center, Zhongshan Hospital, Fudan University, Shanghai, China., Ahmad I; Department of Plastic and Reconstructive Surgery, Zhongshan Hospital, Fudan University, Shanghai, China., Shanshan G; Department of Radiology, Shanghai Geriatric Medical Center, Zhongshan Hospital, Fudan University, Shanghai, China., Jianke L; Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China., Lingli C; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China., Yuan J; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China., Mengsu Z; Department of Radiology, Shanghai Geriatric Medical Center, Zhongshan Hospital, Fudan University, Shanghai, China., Mingliang W; Department of Radiology, Shanghai Geriatric Medical Center, Zhongshan Hospital, Fudan University, Shanghai, China. wang.mingliang@zs-hospital.sh.cn.
Jazyk: angličtina
Zdroj: Abdominal radiology (New York) [Abdom Radiol (NY)] 2023 Mar; Vol. 48 (3), pp. 913-924. Date of Electronic Publication: 2023 Feb 02.
DOI: 10.1007/s00261-023-03818-z
Abstrakt: Purpose: The aim of the study was to analyze MR imaging features of hepatic epithelioid angiomyolipoma (HEAML).
Methods: This study included 113 patients with 122 pathologically confirmed HEAML who underwent enhanced MRI scanning before partial hepatectomy. MR images were retrospectively reviewed and correlated with pathological findings.
Results: The mean age of 113 patients was 48.12 ± 11.77 years old, and the male to female ratio was 1:3.35 with 87 females (76.99%). 107 (94.69%) patients presented as single tumor, and 96 patients (84.96%) were asymptomatic. 122 HEAML lesions were diagnosed pathologically in 113 patients, with the average of 4.47 ± 3.26 cm. 109 lesions (89.34%) and 108 lesions (88.52%) showed regular and well-defined boundary. On T1WI, 121 lesions (99.18%) mainly presented hypointensity. On T2WI, 118 lesions (96.72%) and 109 lesions (89.34%) mainly showed hyperintensity and heterogeneous signals. Most of the lesions (97.46%) showed hyperintensity on DWI. 118 lesions (96.72%) manifested as severe hyperenhancement and 106 lesions (86.89%) showed heterogeneity during the arterial phase. As for the lesion enhancement pattern, 73 lesions (59.84%) presented as persistent enhancement, 37 lesions (30.33%) as wash out, 8 lesions (6.56%) as degressive enhancement, and 4 lesions (3.28%) as poor blood supply. Additionally, 96 lesions (78.69%) with intra-tumor vessels and 85 lesions (69.67%) with outer rim were confirmed during the delayed phase.
Conclusion: At enhanced MRI, hypointensity on T1WI, hyperintensity and heterogeneous signals on T2WI, hyperintensity on DWI, little or no fat component, heterogenous hyperenhancement, persistent enhancement, intra-tumor vessels, and outer rim would be helpful to diagnose HEAML.
(© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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