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肺癌的局部蔓延主要经支气管粘膜下浸润,可进而向支气管外肺实质或向纵隔、胸膜等处浸润生长。而肺癌中的小细胞癌和未分化癌早期则侵入淋巴道转移,并直接侵入纵隔,形成纵隔型肺癌,此时呼吸道症状可不明显,原发病灶较小而不易察觉,或病灶与纵隔块影重叠,常酷似良性纵隔肿瘤,但纵隔型肺癌和良性纵隔肿瘤之治疗方针及预后完全不同。为此,我们收集表现为病变阴影与纵隔不能分离、基底部较宽、肿块边缘光滑或大部规则无明显毛刺,与纵隔夹角为钝角,经手术或病检证实的纵隔型肺癌36例与原发性良性纵隔肿瘤106例(包括
The local spread of lung cancer is mainly infiltrated through the bronchial submucosa and may then infiltrate into the extrabronchial lung parenchyma or to the mediastinum, pleura, and the like. In small-cell lung cancer and undifferentiated carcinoma, invasive lymphatic metastasis occurs early in the lung cancer and directly invades the mediastinum to form mediastinal lung cancer. At this time, the respiratory tract symptoms may not be obvious, the primary lesion is small and difficult to detect, or the lesion and the mediastinum block shadow Overlapping often resembles a benign mediastinal tumor, but the therapeutic guidelines and prognosis for mediastinal lung cancer and benign mediastinal tumors are completely different. To this end, we collected 36 cases of mediastinal lung cancer with shadows of lesions that were inseparable from the mediastinum, wide base, smooth edges of the mass, or no major burrs in the majority of the rules, and obstruction angles to the mediastinum, confirmed by surgery or pathology. Primary benign mediastinal tumors in 106 cases (including