[Roentgenologic analysis of Crohn's disease with special reference to its small lesions found by double-contrast method (author's transl)].
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Adult↗
Biomedical subjects
I Tsukaguchi
Publications and source records attributed to I Tsukaguchi.
A criss-cross heart with concordant atrioventriculo-arterial connections. Report of a case.
A distinctive angiographic appearance is described in a case of "criss-cross" heart with concordant atrioventriculo-arterial connections. The atrial situs was normal, and the morphological right ventricle was superior to the left ventricle, and the ventricular septum was horizontal in position. Both ventricleswere connected by a small ventricular septal defect. The aorta was situated anteriorly and to the right of the pulmonary artery. Although the cardiac segment was the apparent [S,L,D] type, the heart had conconrdant atrioventriculo-arterial connections. The ventricular rotation of the solitus heart about the longitudinal and the anteroposterior axis affected the atrioventricular flows, the plane of the ventricular septum, the inflow and outflow tracts of the ventricles, the interrelationship of the great arteries, and the course of the left coronary artery. Using the recent definition of criss-cross heart, we classified the heart as solitus-concordant (l-rotated) -normal.
Arteries↗
[A case report of a juvenile polyp in the transverse colon (author's transl)].
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Child, Preschool↗
MRI of symptomatic sacral perineural cyst.
Sacral perineural cyst is a relatively rare condition. To our knowledge, reports of MR findings associated with sacral perineural cyst have been limited to only six cases. We present for the first time high field MR findings in a case of sacral perineural cyst. The cyst appeared as a cystic lesion in the sacral spinal canal and had intermediate signal intensity on T1W images and high signal intensity on T2*W images compared with CSF. Slight erosion remodeling of the sacrum was also seen anteriorly. Our case was symptomatic and present with radiculopathy (sciatic pain). Surgical treatment was done to result in dramatic improvement of the sciatic pain.
Cysts↗
MRI of fibrous cortical defect of the femur.
The MR imaging findings of 10 cases of fibrous cortical defect of the femur are presented. Although surgical biopsy was not available in the 10 cases, clinical follow-up confirmed the diagnosis. Most of the lesions were located on the posteromedial aspect of the distal femur, corresponding to the site of attachment of the extensor tendon of the adductor magnus muscle or the medial head of the gastrocnemius. They were oval in shape, and their diameter ranged from 29 x 15 mm to 8 x 6 mm, with an average of 14 mm. With MR, most of the fibrous cortical defects were imaged with iso-signal intensity to muscle on T1-weighted images and high signal intensity on T2*-weighted images. They were invariably surrounded by low signal intensity rims on both sequences, representing marginal sclerosis. The appearance seemed to be sufficiently diagnostic to obviate the need for biopsy.
Adolescent↗
MR imaging of pigmented villonodular synovitis of the knee.
Six cases of pigmented villonodular synovitis (PVNS) of the knee are presented. MR imaging and surgical proof were available in all cases. Three of the six cases showed the diffuse form, and the other three cases the localized form. The MR appearance of PVNS varied, presumably according to the relative proportion of pathological components. It most commonly consisted of scattered low signal intensity areas representing hemosiderin deposition in hypertrophied synovium on T2(*)-weighted images, and dotted areas of low signal intensity, presumably resulting from fibrous components of the lesion, on T1-weighted images. The latter finding is described for the first time in this report. Two cases were associated with osteoarthritis. In the remaining four cases, the osseous structures, cruciate ligaments, and menisci were normal. MR imaging was of great use in the detection of PVNS. For the first time, a preoperative diagnosis of PVNS of the knee joint could be made by MR imaging.
Adolescent↗
MR imaging of acute disseminating encephalomyelitis.
We present a case of acute disseminating encephalomyelitis (ADEM) diagnosed on MR imaging. MR imaging accurately identified the location of the ADEM lesions in the spinal cord and brain.
Acute Disease↗
Case report: MR appearance of hemangiopericytoma of the thigh.
We report a case of hemangiopericytoma in the thigh of a 42-year-old woman. CT examination depicted a peripherally enhanced, multicystic mass without calcification. On T1-weighted images of MRI, the mass showed slightly high signal intensity relative to muscle, with the exception of the lower pole, which showed high signal intensity. On T2*-weighted images, the mass showed high signal intensity and cystic appearance. The lower pole showed low signal intensity on T2*-weighted images and was thought to be intratumoral hemorrhage. Low signal intensity structures on both T1- and T2*-weighted images were observed within and around the mass. They were thought to be dilated vessels, although this was not confirmed at surgery. Hemangiopericytoma should be considered in the differential diagnosis of a tumor in the thigh when MR images show the mass with slightly high signal intensity on T1-weighted images, intratumoral hemorrhage, and flow voids within or adjacent to the tumor.
Adult↗