Prediction of Risk of Malignancy of Gastrointestinal Stromal Tumors by Endoscopic Ultrasonography.
- Author:
Mi Na KIM
1
;
Seung Joo KANG
;
Sang Gyun KIM
;
Jong Pil IM
;
Joo Sung KIM
;
Hyun Chae JUNG
;
In Sung SONG
Author Information
1. Seoul National University Hospital Healthcare System, Seoul National University College of Medicine, Seoul, Korea.
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Gastrointestinal stromal tumors;
Endosonography;
Tumor size;
Malignant risk
- MeSH:
Aged;
*Endosonography;
Female;
Gastrointestinal Stromal Tumors/*pathology/surgery/*ultrasonography;
Humans;
Male;
Middle Aged;
Mitotic Index;
Predictive Value of Tests;
Preoperative Period;
Retrospective Studies;
Risk Assessment;
Stomach Neoplasms/*pathology/surgery/*ultrasonography;
Tumor Burden
- From:Gut and Liver
2013;7(6):642-647
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND/AIMS: The accurate preoperative prediction of the risk of malignancy of gastrointestinal stromal tumors (GISTs) is difficult. The aim of this study was to determine whether tumor size and endoscopic ultrasonography (EUS) features can preoperatively predict the risk of malignancy of medium-sized gastric GISTs. METHODS: Surgically resected, 2 to 5 cm gastric GIST patients were enrolled and retrospectively reviewed. EUS features, such as heterogeneity, hyperechoic foci, calcification, cystic change, hypoechoic foci, lobulation, and ulceration, were evaluated. Tumors were grouped in 1 cm intervals. The correlations of tumor size or EUS features with the risk of malignancy were evaluated. RESULTS: A total of 75 patients were enrolled. The mean tumor size was 3.43+/-0.92 cm. Regarding the risk of malignancy, 51 tumors (68%) had a very low risk, and 24 tumors (32%) had a moderate risk. When the tumors were divided into three groups in 1 cm intervals, the proportions of tumors with a moderate risk were not different between the groups. The preoperative EUS features also did not differ between the very low risk and the moderate risk groups. CONCLUSIONS: Tumor size and EUS features cannot be used to preoperatively predict the risk of malignancy of medium-sized gastric GISTs. A preoperative diagnostic modality for predicting risk of malignancy is necessary to prevent the overtreatment of GISTs with a low risk of malignancy.
