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2004 ; 10
(16
): 2417-8
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Gastrointestinal stromal tumor: Computed tomographic features
#MMPMID15285033
Lee CM
; Chen HC
; Leung TK
; Chen YY
World J Gastroenterol
2004[Aug]; 10
(16
): 2417-8
PMID15285033
show ga
AIM: Gastrointestinal stromal tumor (GIST) is a rare type of cancer. Computed
tomography (CT) is an imaging modality of choice for diagnosing GIST. The aim of
this retrospective study was to review the CT imaging features of 17 GIST
patients. METHODS: From 1995 to 2003, there were 47 patients with pathologically
proven GISTs at our hospital. Of these, 17 patients underwent preoperative CT. We
collected and analyzed these CT images. The CT imaging features included tumor
diameter, number and location, tumor margin, location of metastasis, hounsfield
units of tumor and effect of contrasts. In addition, we also recorded the
surgical findings, including complications, tumor size and location for
comparative analysis. RESULTS: The results showed that 12 (70%) tumors were
located in the stomach and five (30%) were located in the jejunum mesentery.
GISTs were extraluminal in 12 (70%) patients. The tumor margins of 13 (76%)
tumors were well defined and irregular in four (24%). The effect of contrast
enhancement on GIST CT imaging was homogenous enhancement in 13 (76%) and
heterogeneous enhancement in four (24%). The hounsfield units (HU) were 30.41
+/-5.01 for precontrast images and postcontrast hounsfield units were 51.80 +/-
9.24. CONCLUSION: The stomach was the commonest site of GIST occurrence among our
patients. The CT features of GIST were well-defined tumor margins, homogenous
enhancement on postcontrast CT images.