Histoid
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Histoid refers to structures resembling tissue. The article discusses histoid tumors, which are composed of uniform cells without other cellular forms, contrasting with organoid tumors. It notes that true histoid tumors are rare, with some benign basalomas and small chondromas considered examples, though one author questions their existence due to the presence of stroma in tumors.
Encyclopedia entry (1928–1936)
Histoid (from Greek histion-tissue), resembling in structure the tissue of an organism. One speaks of histoid tumors (Virchow) in those cases when they represent a collection of homogeneous cells, without admixture of other cellular forms, such as: connective tissue or vascular. They are contrasted with organoid tumors, which, similar to organs, consist of several tissues of different histological character. Histoid tumors are a rather rare phenomenon; to them can be attributed benign basalomas, small chondromas, etc. If one takes into account the almost constant presence in tumors of stroma or capsule formations, then one can say that histoid tumors do not exist (N. N. Petrov).
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“Histoid.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/histoid/