CT and MRI Features of Rare Primary Malignant Liver Tumors in Adults
10.3969/j.issn.1005-5185.2025.10.017
- VernacularTitle:成人原发性肝脏少见恶性肿瘤的CT和MRI表现
- Author:
Zijian TANG
1
;
Chaobang XIE
;
Tijiang ZHANG
Author Information
1. 遵义医科大学附属医院放射科 贵州省医学影像中心,贵州 遵义 563000
- Publication Type:Journal Article
- Keywords:
Liver neoplasms;
Tomography,X-ray computed;
Magnetic resonance imaging;
Diffusion weighted imaging;
Pathology;
Adult
- From:
Chinese Journal of Medical Imaging
2025;33(10):1127-1132
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To analyze CT and MRI manifestations of rare primary malignant liver tumors in adults to improve the diagnostic accuracy.Materials and Methods This retrospective study analyzed imaging,clinical and pathological data from 28 patients with pathologically confirmed rare primary malignant liver tumors at the Affiliated Hospital of Zunyi Medical University(April 2011 to July 2024).Clinical presentations,laboratory findings,and CT/MRI characteristics of different tumor types were evaluated.Results The cohort included eight cases of hepatic sarcomatoid carcinoma,eight of primary hepatic lymphoma,six of primary hepatic gastrointestinal stromal tumor,three of intrahepatic biliary cystadenocarcinoma,and three of hepatic adenosquamous carcinoma.Distinct imaging features were observed:all eight sarcomatoid carcinomas presented as solitary,large cystic-solid masses;three showed progressive or persistent enhancement of solid components/septae,with four demonstrating portal vein tumor thrombus.Seven cases of primary hepatic lymphomas appeared as homogeneous,round/oval lesions,with one case restricted diffusion on diffusion weighted imaging,and seven cases exhibited mild homogeneous enhancement;two exhibited the vessel penetration sign;all six primary hepatic gastrointestinal stromal tumors manifested as cystic-solid masses with extensive central necrosis;two showed peripheral pseudocapsules while four had tortuous feeding vessels,with mild-to-moderate persistent enhancement of solid components;all three intrahepatic biliary cystadenocarcinomas occurred in the left lobe,presenting as multilocular cystic lesions with papillary mural nodules showing variable enhancement of walls,septations and nodules;two adenosquamous carcinomas demonstrated irregular morphology with distal biliary dilation and predominant delayed enhancement.Conclusion Imaging diagnosis of rare primary malignant liver tumors remains challenging.While some lesions demonstrate characteristic features,pathological confirmation remains essential for definitive diagnosis.
