The autopsy findings of a newborn with renal tubular dysgenesis, born to first cousins of Moslim Arab descent, are described. Hypocalvaria and hyperflexible joints were noted in addition to the renal lesion. A microdissection study demonstrated marked shortening of all the nephron segments from the glomeruli to the collecting tubules, rather than an isolated abnormality of the proximal convoluted tubules.
Angiographic and pathologic findings are presented and correlated in a case of renal cavernous hemangioma, and considered in relation to 3 other cases published previously. A normal angiogram does not exclude a cavernous hemangioma. Those tumors with a large arterial component may be demonstrated in the arterial phase of the angiogram. A discrete tumor may show an area of hypovascularity by displacing normal renal tissue but a diffuse cavernous hemangioma is likely to yield a normal angiogram.
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