Brief Article
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World J Gastroenterol. Mar 28, 2014; 20(12): 3364-3368
Published online Mar 28, 2014. doi: 10.3748/wjg.v20.i12.3364
Multi-slice computed tomography manifestations of hepatic epithelioid angiomyolipoma
Chun-Lai Dai, Li-Ping Xue, Yu-Mei Li
Chun-Lai Dai, Department of Radiology, the First Hospital of Jilin University, Changchun 130021, Jilin Province, China
Li-Ping Xue, Press of Maternal and Child Health Care of China, Medicine Periodical House of Jilin Province, Changchun 130021, Jilin Province, China
Yu-Mei Li, Department of Pediatrics, the First Hospital of Jilin University, Changchun 130021, Jilin Province, China
Author contributions: Dai CL was in charge of experimental design and carried out the study; Xue LP performed image collection and postprocessing; Li YM collected and analyzed the data.
Supported by Jilin Provincial Science and Technology Department, No. 201015158 and No. 20110922; and Jilin Provincial Administration of Traditional Chinese Medicine, No. 2011-JS20
Correspondence to: Yu-Mei Li, MD, Department of Pediatrics, the First Hospital of Jilin University, Xinmin Street No. 1, Changchun 130021, Jilin Province, China. liyumei1988@126.com
Telephone: +86-431-88783976 Fax: +86-431-88783975
Received: August 14, 2013
Revised: October 31, 2013
Accepted: January 2, 2014
Published online: March 28, 2014
Processing time: 224 Days and 17.9 Hours
Abstract

AIM: To explore the characteristics of multi-slice computed tomography (CT) manifestations of hepatic epithelioid angiomyolipoma (HEA), improve the rate of accurate diagnosis, and reduce the misdiagnostic rate.

METHODS: The multi-slice CT manifestations in five patients who were diagnosed with HEA definitely by postoperative pathological examination were analysed retrospectively. Three female patients and two male patients were included. Before operation, four patients received plain CT scanning and dynamic enhancement scanning, and the other patient only received enhancement scanning, with immunohistochemical analysis conducted after postoperative pathological examination. Four patients were misdiagnosed by CT, including three patients misdiagnosed with hepatic cell carcinoma and one patient with focal nodular hyperplasia.

RESULTS: Upper abdominal multi-slice spiral CT scanning and three-stage enhancement scanning were conducted in five patients with HEA before operation. HEA had certain characteristic CT manifestations: low density masses, a few relatively high-density masses or fat-density masses diffusely shown in foci, clear boundary, round or oval and large focus, and tumour size ranging from 3.1 cm × 2.5 cm to 7.0 cm × 5.2 cm. During enhancement scanning, the foci were significantly enhanced uniformly or non-uniformly during the arterial phase, while during the venous and equilibrium phases, the foci were enhanced continuously or showed obvious low-density masses. Obviously enhanced and widened vessels could be found adjacent to foci or in the central area of foci during the arterial phase.

CONCLUSION: CT manifestations of HEA have certain characteristics. Primary diagnosis can be obtained by combining CT findings with clinical data, but pathological examination is still needed for a definite diagnosis.

Keywords: Liver; Epithelioid; Angiomyolipoma; Computed tomography

Core tip: The multi-slice computed tomography manifestations in five patients with HEA were analyzed in the study. In computed tomography scanning, low density masses, a few relatively high density masses or fat density masses were showed in foci, the boundary was clear, the focus was round or oval and large, and the size of the tumour was 3.1 cm × 2.5 cm to 7.0 cm × 5.2 cm. The foci were significantly enhanced during arterial phase, enhanced continuously or showed obvious low density masses during venous phase and equilibrium phase, and obviously enhanced and widened vessels could be found adjacent to foci or in the central area of foci.