直肠息肉是直肠良性肿瘤的一种，是直肠内有粘膜覆盖的肿物，呈小的结节状粘膜隆起或为大的带蒂的肿物，一般为单个，少数为多个，若很多息肉聚集直肠或累及结肠者谓之息肉病。息肉源于炎症的称炎性息肉;粘膜呈增生性改变的无蒂结节称增生性息肉;由肠上皮生长的有腺瘤性息肉、绒毛乳头...
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