Biomedical subjects
Publications and source records attributed to J R Sty.
Increased uptake of Tc-99m-methylene diphosphonate occurs in the kidneys of children with sickle cell disease. The abnormal kidney uptake is not related to clinically altered renal function. The exact mechanism of tracer accumulation has not been established.
The multicystic kidney is the most common renal mass in the newborn child. The entity represents 50-65% of all abdominal masses presenting during infancy. The use of Tc-99m-glucoheptonate renal imaging and ultrasonography has improved the diagnostic accuracy in this condition. Four patients with unilateral multicystic kidneys are discussed. The diagnostic and pathologic characteristics of the multicystic kidney are described.
The authors describe the radionuclide characteristics of the "Dance Sign." The "Dance Sign" is an uncommon but reliable observation found on physical examination in patients with intussusception.
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The authors pressent two cases of proximal femoral epiphysiolysis (PFE) in neonates. Radiographs show superolateral displacement of the proximal femoral metaphysis in relation to a normal acetabulum, which differentiates PFE from a congenital hip dislocation. Early diagnosis and treatment of PFE can prevent coxa vara.
Five cases of bacterial epididymo-orchitis are presented. These patients demonstrate three distinct mechanisms of bacterial infection of the intrascrotal structures: epididymo-orchitis as a presentation and a complication of urinary tract infection; epididymo-orchitis associated with sexually transmitted disease; and epididymo-orchitis associated with systemic infection. We recommend urine, urethral, and blood bacterial cultures, in addition to viral serologic studies, as an appropriate evaluation for any patient with epididymo-orchitis.
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The authors describe a positive 99mTc-Pyrophosphate (99mTc-PYP) myocardial scan in a child with congenital cyanotic heart disease who developed bacterial endocarditis.