Masatoshi Kadoya

Publications (2)2.73 Total impact

• Article: Spontaneous pneumothorax in a patient with dendriform pulmonary ossification: report of a case.

  Tatsuya Kato, Keidai Ishikawa, Masatoshi Kadoya, Kenzo Okamoto, Mitsuhito Kaji
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  ABSTRACT: We report herein the rare case of a patient with dendriform pulmonary ossification (DPO) who developed spontaneous pneumothorax. A 33-year-old male with a history of bronchial asthma presented with pneumothorax of the left lung. An intraoperative inspection revealed no findings of bullae in the entire left lung, but inflammatory pleural changes were identified on the interlobular surface of the left lower lobe. In addition, hard, twig-like configurations were clearly palpable in the subpleural parenchyma and were resected. A histological examination showed acicular bone formations containing myeloid tissue and marrow fat in the lung. DPO was thus diagnosed, and the bony spines were considered to have caused a rupture of the elastic fiber layer of the visceral pleura. DPO may thus have been directly responsible for the pneumothorax in this case.
  Surgery Today 02/2012; 42(9):903-8. · 1.22 Impact Factor
• Article: 18F-FDG uptake in primary lung cancer as a predictor of intratumoral vessel invasion.

  Tetsuya Ishibashi, Mitsuhito Kaji, Tatsuya Kato, Keidai Ishikawa, Masatoshi Kadoya, Nagara Tamaki
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  ABSTRACT: This study investigated how fluorodeoxyglucose (FDG) uptake on PET in the primary tumor may predict intratumoral vessel invasion (IVI) in it. A total of 512 patients with lung neoplasms determined by a surgical procedure and histopathological diagnosis had undergone FDG-PET scanning. Among the 440 cases confirmed to be malignant, the maximum standardized uptake value (SUV(max)) was significantly lower in IVI-negative cases than IVI-positive cases (P < 0.001). In the substudy on adenocarcinoma (AC), SUV(max) was significantly lower in IVI-negative cases too (P < 0.001), but SUV(max) in squamous cell carcinoma was without significant difference. In addition, IVI was associated with a significantly higher probability of lymph node metastasis (P < 0.001). This study indicates that a malignant lung tumor with higher SUV(max) has a significantly higher probability of IVI and lymph node metastasis, particularly if the malignancy is an AC.
  Annals of Nuclear Medicine 06/2011; 25(8):547-53. · 1.50 Impact Factor