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肺炎性假瘤(Pulmonary Pseudotumor,PP)为肺实质内的一种炎性增生性肿瘤样病变,即临床表现和病理标本肉眼所见酷似肿瘤,而组织学检查则属炎性增生或与炎症结局相关的病变早在1923年Lange等首先在尸检中观察到,1939年Brunn首次报告1例,嗣后世界各地均有报道。由于病因不清、病理形态复杂本病命名不一,如硬化性血管瘤、炎症后假性肿瘤、组织细胞瘤、黄色瘤、纤维黄色瘤、黄色肉芽肿、孤立性肥大细胞肉芽肿、浆细胞瘤、嗜酸性内芽肿、圆形肺不张和蜂窝肺等均指本病.近10余年来,本病报道有增加趋势,且临床诊断困难,易与肺部良、恶性肿瘤等相混
Pulmonary pseudotumor (PP) is an inflammatory proliferative tumor-like lesion in the parenchyma of the lung. Clinical manifestations and pathological specimens resemble those of the naked eye, and histological examination is an inflammatory hyperplasia or inflammatory outcome. Related lesions were first observed in autopsy by Lange et al. In 1923, 1 case was reported by Brunn in 1939 and was reported all over the world. Due to unclear etiology, complicated pathology, the disease is named differently, such as sclerosing hemangioma, post-inflammatory pseudotumor, histiocytoma, xanthoma, fibrosarcoma, yellow granuloma, isolated mast cell granuloma, plasma cell Tumor, eosinophilic granulomatosis, round atelectasis, and honeycomb lung all refer to the disease. In the past 10 years, the disease has been reported to increase, and clinical diagnosis is difficult. It is easy to mix with benign and malignant lungs.