title: Basket pattern blood flow signals discovered in a case of splenic hamartoma by power Doppler ultrasonography.
abstract: We present the gray-scale ultrasonography (GSUS), power Doppler ultrasonography (PDUS), abdominal computed tomography (CT), and magnetic resonance imaging (MRI) findings for a case of splenic hamartoma in a 27-year-old man, showing a phi 50 mm homogeneous, iso- and hypo-echoic splenic mass with evidence of a small plural cystic lesion. This splenic hamartoma showed increased vascularity on power Doppler sonograms. PDUS showed multiple circular blood flow signals inside the mass (i.e. a basket pattern), which was consistent with the small plural cystic lesion shown by GSUS. Spectral analysis also confirmed arterial and venous flow. CT scans showed that the mass had low-density relative to the normal spleen and MRI showed that the mass was isodense, relative to the normal spleen. Therefore, CT and MRI are not useful for the diagnosis of splenic hamartoma. Ultrasonography can be used to diagnose splenic hamartoma without administration of a contrast material and therefore is an indispensable method for the diagnosis of splenic hamartoma.
authors.affiliation: First Department of Internal Medicine, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Nakanishi
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shiraki
authors.forename: Kouji
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakano
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Koyama
authors.forename: Takatsugu
authors.initials: T
authors.lastname: Yano
authors.forename: Takayuki
authors.initials: T
authors.lastname: Sanda
authors.forename: Hisao
authors.initials: H
authors.lastname: Tamaki
authors.forename: Tadanori
authors.initials: T
authors.lastname: Hirano
authors.forename: Kazuo
authors.initials: K
authors.lastname: Fukudome
authors.forename: Akinori
authors.initials: A
authors.lastname: Ishihara
mesh_terms: D000328:Adult; D006222:Hamartoma / Q000098:blood supply* / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012039:Regional Blood Flow; D013158:Splenic Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology*; D014057:Tomography, X-Ray Computed; D018608:Ultrasonography, Doppler