progonoma of jaw

См. также в других словарях:

• progonoma — A nodule or mass resulting from displacement of tissue when atavism occurs in embryonic development; represents a reversion to structures not normally occurring in the individuals of a species, but observed in ancestral forms of that species.… …   Medical dictionary

• tumor — 1. Any swelling or tumefaction. 2. SYN: neoplasm. 3. One of the four signs of inflammation (t., calor, dolor, rubor) enunciated by Celsus. [L. t., a swelling] acinar cell t. a …   Medical dictionary

• melanotic neuroectodermal tumor — a benign, rapidly growing, deeply pigmented tumor of the jaw or occasionally other sites, consisting of an infiltrating mass of cells arranged in an alveolar pattern, and occurring almost exclusively in infants. Its source of origin is in dispute …   Medical dictionary