上颌窦出血坏死性息肉是发生于上颌窦，以出血坏死为特征的息肉或粘膜慢性炎症。由于其病变隐匿，临床症状和影象学检查又类似于上颌窦恶性肿瘤，一开始就明确诊断较为困难，因此临床工作中，常有将其误诊为恶性肿瘤者。为进一步提高对本病的认识，探讨有效的诊断和治疗方法， Maxillary sinus hemorrhage necrotic polyps occur in the maxillary sinus, bleeding and necrosis characterized by polyps or mucosal chronic inflammation. Because of its occult lesions, clinical symptoms and imaging studies are similar to maxillary sinus malignant tumors, the beginning of a clear diagnosis is more difficult, so clinical work, often misdiagnosed as malignant tumors. In order to further enhance the understanding of this disease and to explore effective methods of diagnosis and treatment,