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Biomedical subjects

J R Sty

Publications and source records attributed to J R Sty.

At least 73 records · Page 4Linked to original sources
PubMed1987

Scintigraphic patterns in osteoid osteoma and spondylolysis.

A retrospective review was performed of radionuclide bone scans and radiographs of 54 children with diagnoses of spondylolysis or osteoid osteoma/osteoblastoma. The findings indicate that skeletal scintigraphy shows imaging patterns that can be used to help distinguish these two conditions. Most cases of spondylolysis and all cases of osteoid osteoma or osteoblastoma demonstrated focally increased activity on the delayed skeletal scintigrams. Evaluation of the bone scan images obtained during the immediate postinjection period revealed intense activity with osteoid osteoma and osteoblastoma, but minimal or no abnormal activity in cases of spondylolysis. In addition, spondylolysis was the only condition that produced bilateral abnormalities in the pars interarticularis region in these children.

Adolescent↗
PubMed1987

Computerized tomography in hemophiliacs with head trauma.

Intracranial hemorrhage secondary to head trauma is a major cause of morbidity and mortality in patients with bleeding disorders. Indications for head computerized tomographic scanning (CT scan) on patients with bleeding disorders who sustain head trauma are not well established. We retrospectively reviewed the medical records and head CT scan results of 21 patients with bleeding disorders. Five patients had more than one episode of head trauma. The severity of head trauma per episode was classified according to objective clinical findings as minor in 12 episodes, moderate in 12, and severe in four. In three of four patients with severe head trauma, the CT scan showed evidence of intracranial hemorrhage. In this series, all 17 patients with 24 episodes of moderate or minor head trauma had normal head CT scans. We conclude that a larger prospective study is needed to further evaluate the diagnostic value of head CT scan in hemophilia patients with minor or moderate head trauma, as defined in this study.

Adolescent↗
PubMed1987

Imaging in acute renal infection in children.

Infection is the most common disease of the urinary tract in children, and various imaging techniques have been used to verify its presence and location. On retrospective analysis, 50 consecutive children with documented upper urinary tract infection had abnormal findings on renal cortical scintigraphy with 99mTc-glucoheptonate. The infection involved the renal poles only in 38 and the poles plus other renal cortical areas in eight. Four had abnormalities that spared the poles. Renal sonograms were abnormal in 32 of 50 children. Excretory urograms were abnormal in six of 23 children in whom they were obtained. Vesicoureteral reflux was found in 34 of 40 children in whom voiding cystourethrography was performed. These data show the high sensitivity of renal cortical scintigraphy with 99mTc-glucoheptonate in documenting upper urinary tract infection. The location of the abnormalities detected suggests that renal infections spread via an ascending mode and implies that intrarenal reflux is a major contributing factor.

Acute Disease↗