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| pleuropulmonary blastoma ： ウィキペディア英語版 |
pleuropulmonary blastoma
Pleuropulmonary blastoma (PPB) is a rare cancer originating in the lung or pleural cavity. It occurs most often in infants and young children〔 but also has been reported in adults. In a retrospective review of 204 children with lung tumors, pleuropulmonary blastoma and carcinoid tumor were the most common primary tumors (83% of the 204 children had secondary tumors spread from cancers elsewhere in the body). Pleuropulmonary blastoma is regarded as malignant.
==Signs and symptoms==
Symptoms may include coughing, an upper respiratory tract infection, shortness of breath, and chest pain. These symptoms are very non-specific, and can be caused by other types of tumor in the lung or mediastinum more generally, and by other conditions. Imaging (X-ray, CT, MRI) may be used to determine the presence and precise location of a tumor, but not a specific diagnosis of PPB or other tumor.
Doctors are unable to tell if a child has PPB right away, and not upper respiratory tract infection, until more test are taken and they show that there is no infection. Another symptom is pneumothorax.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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