Pycnodysostosis with visceral manifestation and rickets.

Pycnodysostosis is a rare bone disease. Visceral manifestations associated with anemia and/or rickets have been reported in pycnodysostosis. Five children with typical findings of pycnodysostosis with hepatosplenomegaly, anemia with rickets, one with visceromegaly and anemia, and another with rickets alone are reported here.

Pathogenesis of cardiovascular complications in children following scorpion envenoming.

Scorpion envenoming is known to produce serious complications in children, and the complications differ with different species seen in the world. Peripheral failure, hypotension, myocarditis and seizures are the serious complications related to scorpion envenoming. The pathogenesis of cardiovascular complications caused by the Buthotus (Buthus) tamulus species is likely to be related to the direct effect of the venom on the myocardium rather than to catecholamine-induced hypoxia, as reported earlier.