Usefulness of the Ice-Cream Cone Pattern in Computed Tomography for Prediction of Angiomyolipoma in Patients With a Small Renal Mass
김광호, 윤부현, 정승일, 황인상, 황의창, 강택원, 권동득, 박광성, 김진웅,
소속 상세정보
김광호 ( Kim Kwang-Ho )
Chonnam National University Medical School Department of Urology
윤부현 ( Yun Bu-Hyeon )
Chonnam National University Medical School Department of Urology
정승일 ( Jung Seung-Il )
Chonnam National University Medical School Department of Urology
황인상 ( Hwang In-Sang )
Chonnam National University Medical School Department of Urology
황의창 ( Hwang Eu-Chang )
Chonnam National University Medical School Department of Urology
강택원 ( Kang Taek-Won )
Chonnam National University Medical School Department of Urology
권동득 ( Kwon Dong-Deuk )
Chonnam National University Medical School Department of Urology
박광성 ( Park Kwang-Sung )
Chonnam National University Medical School Department of Urology
김진웅 ( Kim Jin-Woong )
Chonnam National University Medical School Department of Diagnostic Radiology
KMID : 0358320130540080504
Abstract
Purpose: A morphologic contour method for assessing an exophytic renal mass as benign versus malignant on the basis of the shape of the interface with the renal parenchyma was recently developed. We investigated the usefulness of this morphologic contour method for predicting angiomyolipoma (AML) in patients who underwent partial nephrectomy for small renal masses (SRMs). Materials and Methods: From January 2004 to March 2013, among 197 patients who underwent partial nephrectomy for suspicious renal cell carcinoma (RCC), the medical records of 153 patients with tumors (AML or RCC) ≤3 cm in diameter were retrospectively reviewed. Patient characteristics including age, gender, type of surgery, size and location of tumor, pathologic results, and specific findings of the imaging study ("ice-cream cone" shape) were compared between the AML and RCC groups. Results: AML was diagnosed in 18 patients and RCC was diagnosed in 135 patients. Gender (p=0.001), tumor size (p=0.032), and presence of the ice-cream cone shape (p=0.001) showed statistically significant differences between the AML group and the RCC group. In the multivariate logistic regression analysis, female gender (odds ratio [OR], 5.20; 95% confidence interval [CI], 1.45 to 18.57; p=0.011), tumor size (OR, 0.34; 95% CI, 0.12 to 0.92; p=0.034), and presence of the ice-cream cone shape (OR, 18.12; 95% CI, 4.97 to 66.06; p=0.001) were predictors of AML. Conclusions: This study confirmed a high incidence of AML in females. Also, the ice-cream cone shape and small tumor size were significant predictors of AML in SRMs. These finding could be beneficial for counseling patients with SRMs.
키워드
Angiomyolipoma; Diagnostic imaging; Kidney; Nephrectomy; Renal cell carcinoma
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