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Updated: October 1, 2026
He considers that there are two kinds of polypi first, the soft, vascular and bleeding polypus, usually produced from the fibro-cartilaginous structure of the outer half of the tube; and, secondly, the hard and cartilaginous polypus or excrescence produced from the lining membrane of its inner half. The first is termed the haematoid polypus, and the other the chondromatous.