BACKGROUND Minimal-fat angiomyolipoma(mf-AML)is often misdiagnosed as renal cell carcinoma before surgery.AIM To analyze the magnetic resonance imaging(MRI)features of mf-AML and the causes of misdiagnosis by MRI befo...BACKGROUND Minimal-fat angiomyolipoma(mf-AML)is often misdiagnosed as renal cell carcinoma before surgery.AIM To analyze the magnetic resonance imaging(MRI)features of mf-AML and the causes of misdiagnosis by MRI before operation.METHODS A retrospective analysis was performed on ten patients with mf-AML confirmed by surgical pathology,all of whom underwent preoperative MRI examination to analyze the morphological characteristics and MRI signals of the tumor.RESULTS MRI revealed a circular-like mass in 4/10(40%)patients,an oval mass in 6/10 patients(60%),a mass with a capsule in 9/10 patients(90%),and a mass with a lipid component in 7/10 patients(70%).The diameter of the masses in all ten patients was from 11 to 47 mm;the diameter was between 11 mm and 40 mm in 8/10(80%)patients and between 40 mm and 47 mm in 2/10(20%)patients.CONCLUSION An oval morphological characteristic is strong evidence for the diagnosis of mf-AML,while a capsule and lipids are atypical manifestations of mf-AML.展开更多
Angiomyolipoma (AML) is a benign neoplasm that is easily mistaken for renal cell carcinoma (RCC) upon radiological investigation. The management of the two pathologies is significantly different, and so accurate diagn...Angiomyolipoma (AML) is a benign neoplasm that is easily mistaken for renal cell carcinoma (RCC) upon radiological investigation. The management of the two pathologies is significantly different, and so accurate diagnosis is vital. We report a case in which ultrasound guided biopsy saved the patient from an unnecessary nephrectomy when an AML had radiological appearances consistent with RCC. This case report also discusses the literature surrounding radiological features and novel imaging techniques of minimal-fat AML and RCC.展开更多
文摘BACKGROUND Minimal-fat angiomyolipoma(mf-AML)is often misdiagnosed as renal cell carcinoma before surgery.AIM To analyze the magnetic resonance imaging(MRI)features of mf-AML and the causes of misdiagnosis by MRI before operation.METHODS A retrospective analysis was performed on ten patients with mf-AML confirmed by surgical pathology,all of whom underwent preoperative MRI examination to analyze the morphological characteristics and MRI signals of the tumor.RESULTS MRI revealed a circular-like mass in 4/10(40%)patients,an oval mass in 6/10 patients(60%),a mass with a capsule in 9/10 patients(90%),and a mass with a lipid component in 7/10 patients(70%).The diameter of the masses in all ten patients was from 11 to 47 mm;the diameter was between 11 mm and 40 mm in 8/10(80%)patients and between 40 mm and 47 mm in 2/10(20%)patients.CONCLUSION An oval morphological characteristic is strong evidence for the diagnosis of mf-AML,while a capsule and lipids are atypical manifestations of mf-AML.
文摘Angiomyolipoma (AML) is a benign neoplasm that is easily mistaken for renal cell carcinoma (RCC) upon radiological investigation. The management of the two pathologies is significantly different, and so accurate diagnosis is vital. We report a case in which ultrasound guided biopsy saved the patient from an unnecessary nephrectomy when an AML had radiological appearances consistent with RCC. This case report also discusses the literature surrounding radiological features and novel imaging techniques of minimal-fat AML and RCC.
