Published in:
01-06-2006 | Clinical Image
Unusual pattern of calcification in congenital toxoplasmosis: the tram-track sign
Published in: Pediatric Radiology | Issue 6/2006
Login to get accessExcerpt
A preterm boy was born by vaginal delivery at 35 weeks with a normal Apgar score and was admitted to the nursery for respiratory distress and convulsions. Serology for Toxoplasma-specific IgM antibodies was positive. A lateral skull radiograph (Fig. 1) showed a serpentine, gyriform or convoluted pattern of calcification. A CT of the brain (Fig. 2) revealed extensive bilateral gyral pattern of calcification mimicking a tram-track. There was moderate ventricular dilatation with nodular foci of calcification in the basal ganglia and the periventricular region.
Fig. 1
Lateral skull radiograph
Fig. 2
CT of the brain (window width, 195 HU; center level, 111 HU)
× ![]()
× ![]()
…