Osteopetrosis definitions

ŏs′tē-ō-pĕ-trō sĭs
An inherited disorder of bone resorption that results in abnormally dense, brittle bones that are easily fractured, and including a severe infantile form, characterized by bone marrow obliteration, growth retardation, bony defects, anemia, spleen and liver enlargement, and cranial nerve entrapment that can lead to blindness and deafness, and a benign form of late adolescence or adulthood that is often marked by pain and cranial or peripheral neuropathy.
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A similar disease marked by defects in the long bones of nonhuman mammals, especially cattle and rabbits, or of birds with Rous sarcoma.
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(pathology) A rare hereditary disorder characterized by hard, dense bones.
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