孤立性乳癌肺転移を切除した４例

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  • Diagnosis and Treatment for Solitary Lung Metastasis After Radical Mastectomy for Breast Cancer.

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Solitary lung metastasis after radical operation for breast cancer often presents difficulty in diagnosis and treatment. This paper deals with four patients undergone lung operation who had a previous history of undergoing radical operation for breast cancer 2 or 4 years earlier. All four patients had solitary lesions 2.0 to 4.5cm in longer diameter in the peripheral lung field. Characteristics of imagings were suggestive of primary adenocarcinoma of the lung. One of the four patients was diagnosed by a biopsy under thoracotomy aiming at lobectomy because no diagnosis was made by a preoperative bronchoscopy. Another two patients who already had regional lymph node metastasis underwent a standard lobectomy of the lung as a primary lung cancer. We emphasize that lung metastasis from breast cancer sometimes mimics well differentiated adenocarcinoma of the lung on imaging findings. Thoracoscopic tumor biopsy would be recommended when preoperative diagnosis could not be made through bronchoscopy in order to reduce unnecessary surgical stress. However, most appropriate surgical option is still controversial whether partial resection or lobectomy is right.

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