A Case of Thoracic SMARCA4-deficient Undifferentiated Tumor Diagnosed Definitely by Pleural Cryobiopsy during Semiflexible Thoracoscopy

  • Tsuchimoto Juri
    Department of Respiratory Medicine, Muroran City General Hospital Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Ishikawa Tatsuru
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Koshino Yuta
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Ikeda Takumi
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Kobashi Kenta
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Yasuda Kento
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Nagao Takayuki
    Department of Respiratory Medicine, Muroran City General Hospital Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Asai Yuichiro
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Mori Yuki
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine
  • Chiba Hirofumi
    Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine

Bibliographic Information

Other Title
  • 局所麻酔下胸腔鏡におけるクライオ生検で診断した胸部SMARCA4欠損未分化腫瘍の1例

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Abstract

<p>Background. Pleural biopsy during semiflexible thoracoscopy is useful for the diagnosis of pleural effusion. However, we sometimes experience cases in which the tumor is difficult to grasp with a flexible forceps because of the properties of the pleura. Case. The patient was a 51-year-old man with idiopathic interstitial pneumonia, who was found to have left pleural effusion. We attempted to perform pleural biopsy using a flexible forceps during semiflexible thoracoscopy; however, it was impossible because it was fibrous and hard lesion. Therefore, we performed thoracoscopic pleural biopsy with a cryoprobe. Cryobiopsy enabled us to obtain a specimen. A thoracic SMARCA4-deficient undifferentiated tumor was diagnosed based on the pathological findings. Conclusion. Pleural cryobiopsy during semiflexible thoracoscopy may be useful for the diagnosis of patients with an extensive fibrous pleura, in which the tumor is difficult to grasp with a flexible forceps.</p>

Journal

  • Haigan

    Haigan 62 (4), 345-349, 2022-08-20

    The Japan Lung Cancer Society

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