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Cutaneous chondroma and skin osteoma: causes, symptoms, diagnosis, treatment
Last reviewed: 23.04.2024
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The cutaneous chondroma is localized mainly on the fingers and toes, less often in other parts of the limbs, but, as a rule, near the joints.
Pathomorphology. In the dermis or hypoderma there is a compact, sometimes fibrous capsule, cartilaginous tissue, in the hyaline-basophilic stroma of which lie typical cartilaginous cells with large, sometimes polymorphic nuclei, or binuclear containing glycogen in its cytoplasm.
Histogenetically, in almost all cases, chondromas can originate from embryonic cells of cartilaginous rudiments, from exostoses or appear as a result of chondroid metaplasia of pluripotent mesenchymal cells.
Osteomas of the skin, or cutaneous osteosis. Ossification of the skin can be primary and secondary. To the first belongs the so-called multiple osteoma of the scalp, described by N. Tritsch et al. (1965), and the face.
Secondary ossification, or bone metaplasia of the skin, is the process of converting the connective tissue of the dermis into bone as a result of chronic productive inflammation in the scars and scleroderma, as well as dystrophic changes in it.
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