A case of pulmonary pleomorphic carcinoma difficult to distinguish from pulmonary hematoma

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  • 肺内血腫との鑑別が困難であった肺多形癌の一例

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Abstract

<p>A hematoma-like mass lesion was found in the right upper lobe of a 67-year-old man who had undergone radical surgery for thoracic esophageal cancer 8 months before the appearance. Computed tomography (CT) revealed that the mass lesion measured 5.0 cm in diameter at presentation and subsequently increased to 8.3 cm in 49 days thereafter. Looking back on CT immediately before the surgery for esophageal cancer identified the initial appearance of this lesion as a lung nodule of 0.8 cm in diameter, suggestive of an inflammatory nodule. We skipped biopsy because of concern about airway bleeding and performed right upper lobectomy. Histological examination confirmed the resected specimen to be a pulmonary pleomorphic carcinoma, pathological stage IIA. No signs of recurrence have been detected in the 5 years since surgery. A rapidly-growing mass mimicking an intrapulmonary hematoma may result from an undiagnosed lung cancer, as seen in our case. Therefore, lung resection for a malignant indication should be considered for such cases, even without preoperative histological confirmation.</p>

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