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Biomedical subjects

J R Sty

Publications and source records attributed to J R Sty.

229 records · Page 13Linked to original sources
PubMed1978

Scintigraphy in pediatric urinary tract lymphoma.

Excretory urography is the standard examination used to evaluate structural abnormalities of the urinary tract in children. However, renal imaging offers advantages over excretory urography in the functional evaluation and in certain morphologic patterns of lymphoma.

Child↗
PubMed1978

Hepatic scintigraphy in Caroli's disease.

Caroli's disease (communicating cavernous ectasia of the intrahepatic bile ducts) is manifested on the 99Tc-sulfur colloid images as multiple focal defects in the liver. Since several other conditions have a similar presentation, intravenous or transhepatic cholangiography may be of assistance in reaching the correct diagnosis.

Bile Ducts, Intrahepatic↗
PubMedDate not supplied

Hemimegalencephaly: clinical, EEG, neuroimaging, and IMP-SPECT correlation.

Iofetamine-single photon emission computed tomography (IMP-SPECT) was performed on 2 girls (5 1/2 and 6 years of age) with histories of intractable seizures, developmental delay, and unilateral hemiparesis secondary to hemimegalencephaly. Electroencephalography (EEG) revealed frequent focal discharges in 1 patient, while a nearly continuous burst suppression pattern over the malformed hemisphere was recorded in the other. IMP-SPECT demonstrated a good correlation with neuroimaging studies. In spite of the different EEG patterns, which had been proposed to predict contrasting clinical outcomes, both IMP-SPECT scans disclosed a similar decrease in tracer uptake in the malformed hemisphere. These results are consistent with the pattern of decreased tracer uptake found in other interictal studies of focal seizures without cerebral malformations. In view of recent recommendations for hemispherectomy in these patients, we suggest that the IMP-SPECT scan be used to compliment EEG as a method to define the extent of abnormality which may be more relevant to long-term prognosis than EEG alone.

Amphetamines↗
PubMedDate not supplied

CT findings in noma.

Explore the source record for details and available documents.

Child, Preschool↗
PubMedDate not supplied

MR features of fleeting CNS lesions associated with Epstein-Barr virus infection.

The magnetic resonance and CT findings in a 10-year-old patient with neurologic abnormalities associated with Epstein-Barr virus infection are reported. Multiple focal lesions of various sizes were demonstrated with involvement at one time or another of both cerebral hemispheres, the right thalamus, the right cerebellar hemisphere, and the right optic nerve. A unique finding was the fleeting nature of the lesions with new lesions appearing as others resolved. The clinical presentation, laboratory studies, and radiologic patterns suggest the diagnosis of immune-related acute disseminated encephalomyelitis associated with Epstein-Barr virus infection.

Brain↗
PubMedDate not supplied

Nocardia choroid plexitis: CT and MR findings.

We report a case of nocardia choroid plexitis with extension into the parenchyma of the left parietal lobe in a previously well 13-year-old girl. The neuroimaging findings mimicked those of an intracranial neoplasm. This case illustrates the importance of including infectious etiologies in the differential diagnosis of aggressive choroid plexus lesions. The differential diagnosis of enhancing lesions of the choroid plexus in children is discussed.

Adolescent↗
PubMedDate not supplied

Photopenic bone scan osteomyelitis: a clinical perspective.

Eighty-one pediatric patients had nuclear bone-imaging studies confirmatory of osteomyelitis during the past 10 years. Seven (8.6%) of 81 had "cold" osteomyelitis. These seven patients were all toxic [mean temperature (T), 39.9 degrees C; heart rate (HR), 145 beats/min], all had markedly elevated erythrocyte sedimentation rates (mean ESR, 76 mm/h), and six of seven had both confirmatory bone and blood cultures. All patients required surgical intervention. The average length of hospital stay for these seven patients was 32 days (range, 8-65 days). A control group of matched patients with "hot" osteomyelitis was constructed for statistical evaluation. This analysis confirmed significantly increased temperature, resting pulse rate, ESR, length of hospital stay, and rate of surgical intervention in patients with cold versus hot osteomyelitis. Patients with osteomyelitis presenting as a cold defect on bone imaging appeared to have a more aggressive type of bone infection, often requiring aggressive medical and surgical intervention adequately to control this infectious process.

Bone and Bones↗