A Case of Synchronous Double Lung Cancer with Tumor-to-tumor Metastasis, Namely with Small Cell Carcinoma Metastasizing to Squamous Cell Carcinoma

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Nakashima Yasuhiro

Department of Thoracic Surgery, Musashino Red Cross Hospital
Kojima Katsuo

Department of Thoracic Surgery, Musashino Red Cross Hospital
Taki Reiko

Department of Respiratory Medicine, Musashino Red Cross Hospital
Sakurai Urara

Department of Pathology, Musashino Red Cross Hospital
Taki Kazuhiro

Department of Pathology, Musashino Red Cross Hospital
Ishikawa Yuichi

Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research

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<p>腫瘍の進展形式として，腫瘍内腫瘍転移は比較的珍しく，二重肺癌において一方が他方の腫瘍内に転移巣を形成することは極めて稀である．今回我々は同一肺葉内発生の同時性二重肺癌において，一方の混合型小細胞癌が他方の腫瘍内を含む肺内転移を来した稀な1例を経験したため，報告する．</p>