Although Pulmonary sclerosing pneumocytoma (PSP) is generally considered to be a benign tumor, it represents a diagnostic challenge due to its controversial etiology and biologic behavior, the diversity of histopathohistological findings as well as the difficult differential diagnosis from poorly differentiated lung adenocarcinomas or carcinoids. EBUS‐TBNA alone cannot be accepted as the final definitive diagnostic approach for this tumor especially if the specimen is not sufficient.

中文翻译：

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支气管内超声引导下经支气管针吸术中类似恶性肿瘤的肺硬化性肺细胞瘤：病例报告

虽然肺硬化性肺细胞瘤 (PSP) 通常被认为是一种良性肿瘤，但由于其有争议的病因和生物学行为、组织病理学发现的多样性以及与低分化肺腺癌或类癌的鉴别诊断困难，它代表了诊断挑战。单独的 EBUS-TBNA 不能被接受作为该肿瘤的最终确定性诊断方法，尤其是在标本不足的情况下。