Multi-spiral CT in the diagnosis of gastric stromal tumors and correlation with pathology

CAO Dian-bo; SHI Dong-guang; NIU Chun-bo; HAN Guo-liang

Journal of China Clinic Medical Imaging ›› 2006, Vol. 17 ›› Issue (3) : 127-129.

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Multi-spiral CT in the diagnosis of gastric stromal tumors and correlation with pathology

CAO Dian-bo1, SHI Dong-guang1, NIU Chun-bo1, HAN Guo-liang2

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Abstract

Objective: To improve imaging recognition of gastric stromal tumors(GST) and appreciate the value of multi-spiral CT(MSCT) scan. Methods: The clinical and imaging data of 17 cases with GST proved by pathology were reviewed retrospectively. Results: The lesions included endo-luminal growth in 4 cases, extra-luminal growth in 6 cases and duplex-growth in 7 cases. MSCT showed homogeneous or inhomogeneous density, which associated with necrosis, cystis formation and calcification. In enhanced cases, lesions displayed different enhancement. Small vessels arranged in clumps or in line around the tumor during the arterial stage and the enhanced extent of venous stage was more obvious than that of arterial stage. Sign of gastric wall thickening close to lesions was abscent. The accurate rate of localization was 76.5%(13/17) compared with operation. Conclusion: Extra-luminal growth, duplex-growth and absence of gastric wall thickening are characteristic findings of GST in MSCT. The enhanced extent of venous stage superior to that of arterial stage is another feature. Reconstruction of MSCT defines the site, inner ingredients and adjacent tissues of lesion is beneficial to surgery.

Key words

gastrointestinal stromal tumors / tomography / spiral computed / pathology

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CAO Dian-bo;SHI Dong-guang;NIU Chun-bo;HAN Guo-liang. Multi-spiral CT in the diagnosis of gastric stromal tumors and correlation with pathology[J]. Journal of China Clinic Medical Imaging. 2006, 17(3): 127-129