SOLITARY CONGENITAL NODULAR CALCIFICATION OF THE SKIN

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Abstract
SOLITARY congenital nodular calcification of the skin is a form of calcinosis circumscripta. I have been unable to find a description of this condition in the literature. This unusual clinical and histopathological condition was observed in three instances. REPORT OF CASES Case 1.—J. S., a 28-month-old boy, was seen Aug. 12, 1946, for an apparent cystic nodular lesion 3 mm. in diameter involving the eponychium and posterior nail wall of the right index finger. It had been present since birth and had grown very slowly. There was no inflammatory reaction evident clinically. With the area under local anesthesia, the skin bordering the lesion was incised and the nodule curetted out. The hematoxylin-eosin-stained histologic section of the curetted specimen showed hyperkeratosis and acanthosis of the epidermis. Directly beneath the epidermis were irregular amorphous masses of basophilic calcium. Case 2.—E. R., a 13-month-old girl, had a lesion on the

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