title: Dynamic computer tomography is useful in the differential diagnosis of juxtaglomerular cell tumor and renal cell carcinoma.
abstract: We compared dynamic computer tomographic CT images of 3 cases of juxtaglomerular (JG) cell tumor with those of 8 cases of renal cell carcinoma (RCC). The JG cell tumor was visualized as a low- to high-density area in case 1, a low-density area in case 2, and a low- to iso-density area in case 3 before contrast enhancement. None of the JG cell tumors were stained during the early phase (1 min), but all were stained moderately during the late phase (5 min) after contrast enhancement. Although all cases of RCC were visualized as a low- to iso-density area before contrast enhancement, they were intensely stained during the early phase with significant washout during the late phase. The present results suggest that the dynamic CT scan is useful in the differential diagnosis of the JG cell tumor and RCC.
authors.affiliation: Department of Medicine, Institute of Clinical Endocrinology, Tokyo Women's Medical University, Japan. mtsnaruse@endm.twmu.ac.jp
authors.forename: A
authors.initials: A
authors.lastname: Tanabe
authors.forename: M
authors.initials: M
authors.lastname: Naruse
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: F
authors.initials: F
authors.lastname: Ito
authors.forename: S
authors.initials: S
authors.lastname: Takagi
authors.forename: K
authors.initials: K
authors.lastname: Takano
authors.forename: H
authors.initials: H
authors.lastname: Ohashi
authors.forename: K
authors.initials: K
authors.lastname: Tsuchiya
authors.forename: M
authors.initials: M
authors.lastname: Sone
authors.forename: H
authors.initials: H
authors.lastname: Nihei
authors.forename: H
authors.initials: H
authors.lastname: Toma
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology; D000293:Adolescent; D000328:Adult; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007606:Juxtaglomerular Apparatus; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D014057:Tomography, X-Ray Computed / Q000379:methods