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Affiliation |
Faculty of Medicine School of Medicine Department of Surgery, Thoracic and Breast Surgery |
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Title |
Associate Professor |
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External Link |
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MAEDA Ryo
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Papers 【 display / non-display 】
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Kuroki S., Inomata M., Matsuo A., Kawano F., Ayabe T., Maeda R.
International Journal of Surgery Case Reports 111 108887 2023.10
Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Surgery Case Reports
Introduction and importance: We presented an extremely rare case of lung abscess following bronchoscopy associated with lung cancer that extended directly into the chest wall. Case presentation: A 49-year-old man with adenocarcinoma underwent bronchoscopy. Eight days after the biopsy, the patient presented with chills and anterior chest wall pain. Chest computed tomography (CT) scan revealed a gas-containing lung abscess, measuring 10 cm in the left upper lobe and subcutaneous emphysema. The coronal view of the CT indicated a continuous passage of air from the lung abscess to the subcutaneous emphysema beneath the pectoralis muscle. Surgical debridement of the subcutaneous abscess was performed, resulting in drainage of a large volume of purulent material. We confirmed that the lung abscess had directly extended to the chest wall, leading to a decision to perform segmentectomy of the upper division of the left lung. Clinical discussion: Lung abscess associated with lung cancer is a rare, life-threatening complication, which may lead to significant delays in the commencement of oncological treatment and potentially worsen long-term outcomes. In the present case, surgical findings confirmed a lung abscess extending directly to the chest wall. Surgical therapy is the treatment of choice for this rare condition, providing rapid focus control. Therefore, prompt initiation of surgical therapy is essential when conservative measures prove ineffective. Conclusion: Lung abscesses may extend into the chest wall during differential diagnosis of infectious diseases of the chest wall. Successful treatment of this rare condition depends on prompt surgical intervention.
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Radiological features of intrathoracic chronic expanding hematoma: A case report
Inomata M., Kuroki S., Nakada H., Kawano F., Maeda R.
International Journal of Surgery Case Reports 110 108767 2023.9
Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Surgery Case Reports
Introduction and importance: We present a relatively rare case of intrathoracic chronic expanding hematoma (CEH) after thoracic surgery for lung cancer. CEH is often difficult to distinguish from malignant tumors because of its large size and slow progressive enlargement. In this report, we describe the radiological features of CEH in detail. Case presentation: A 67-year-old man who underwent a left upper lobectomy for lung cancer at 46 years of age presented with hemosputum. Computed tomography revealed a large mass with central low attenuation. Calcification was detected in peripheral lesions of the mass. T2-weighted magnetic resonance imaging (MRI) revealed a mass with mixed low and high signal intensities. Based on the clinical course, the patient was diagnosed with an intrathoracic CEH. A left posterolateral thoracotomy was performed with the patient in the lateral position, and a mass encased in a tough capsule was resected. The postoperative histopathological findings were consistent with CEH. Clinical discussion: CT of intrathoracic CEH shows a lesion with heterogeneous content, a thick wall, and calcifications. However, differentiation from malignant tumors is difficult using CT alone. MRI is a good diagnostic modality for CEH and often shows a mixture of low- and high-intensity areas on T2-weighted images. In addition, the patient's medical history is important because most cases of CEH have a history of trauma or surgery. Conclusion: To diagnose intrathoracic CEH, it is essential to consider the patient's clinical course and MRI findings.
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Pleomorphic adenoma of the trachea: A case report
Inomata M., Kuroki S., Oguri N., Sato Y., Kawano F., Maeda R.
International Journal of Surgery Case Reports 109 108499 2023.8
Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Surgery Case Reports
Introduction and importance: Although pleomorphic adenoma is the most common type of parotid gland tumor, its occurrence in the trachea is rare. Here, we describe a successfully resected pleomorphic adenoma of the trachea in a woman with severe respiratory failure that had been preoperatively misdiagnosed as asthma. Case presentation: A 69-year-old woman presented to the emergency department with symptoms of worsening dyspnea and subsequent loss of consciousness. She had a history of progressively worsening wheezing and stridor over the course of 2-years and had been diagnosed with asthma. Arterial blood gas sample analysis indicated type II respiratory failure. A chest computed tomographic scan revealed a tumor in the trachea, which was almost completely obstructing the lower tracheal lumen. The tumor was located just above the carina. To alleviate airway constriction and achieve complete resection, carinal resection with reconstruction was performed. The postoperative diagnosis was pleomorphic adenoma of the trachea. Clinical discussion: Pleomorphic adenoma is a rare tracheal tumor that may present with obstructive airway symptoms that mimic asthma. Conclusion: Tracheal tumors should be considered in patients with chronic respiratory symptoms that do not improve with medication.
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Video-assisted thoracoscopic left upper lobectomy in a patient with situs inversus totalis
Kuroki Shoei, Inomata Mayu, Ayabe Takanori, Maeda Ryo
The Journal of the Japanese Association for Chest Surgery 37 ( 2 ) 146 - 151 2023.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Association for Chest Surgery
Complete situs inversus is a rare abnormality of autosomal recessive inheritance. The surgical management of this entity is complex because the viscus anatomy mirrors the normal anatomy. Here, we report a patient with complete situs inversus, who underwent lobectomy using video-assisted thoracic surgery for lung cancer of the left upper lobe. The procedure was successfully performed despite the patient's atypical anatomy, which mirrored the normal anatomy. Before the surgical intervention, we created a virtual image of left upper lobectomy in a patient with complete situs inversus by horizontally reversing a typical video of right upper lobectomy.
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A spontaneous reduction in tumor size of a thymic carcinoma: a case report.
Kuroki S, Ayabe T, Tanaka H, Nakada H, Maeda R
Surgical case reports 8 ( 1 ) 154 2022.8
Language：English Publishing type：Research paper (scientific journal)
Presentations 【 display / non-display 】
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原発不明の肺門リンパ節転移癌の2切除例
落合貴裕、前田亮、綾部貴典、鈴木康人、富田雅樹、中村都英
第52回日本胸部外科学会九州地方会総会
Event date： 2019.8.29 - 2019.8.30
Language：Japanese Presentation type：Oral presentation (general)
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胸痛にて発見された自然縮小した胸腺腫の1例
千代反田顕、前田亮、富田雅樹、綾部貴典、佐藤勇一郎、中村都英
第52回日本胸部外科学会九州地方会総会
Event date： 2019.8.29 - 2019.8.30
Language：Japanese Presentation type：Oral presentation (general)
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異所性縦隔内甲状腺腫の1切除例
鈴木康人、前田亮、綾部貴典、中村都英、富田雅樹
第52回日本胸部外科学会九州地方会総会
Event date： 2019.8.29 - 2019.8.30
Language：Japanese Presentation type：Oral presentation (general)
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外科医療における患者第一の医療安全と臨床倫理のスキルとエッセンス
綾部貴典、富田雅樹、前田亮、宗像駿、櫻原大智、中村都英
第１１８回日本外科学会定期学術集会
Event date： 2019.4.18 - 2019.4.20
Language：Japanese Presentation type：Oral presentation (general)
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MRSA アウトブレイク発生・収束後の長期アウトカムと産業界品質管理手法による感染制御の質改善の試み
綾部貴典、富田雅樹、前田亮、宗像駿、緒方祥吾、中村都英
第71 回日本胸部外科学会定期学術集会
Event date： 2018.10.4 - 2018.10.6
Language：Japanese Presentation type：Poster presentation