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Affiliation |
Faculty of Medicine College Hospital Department of respiratory medicine and breast surgery |
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Title |
Assistant Professor |
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Related SDGs |
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INOMATA Mayu
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Papers 【 display / non-display 】
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Radiological features and diagnostic pitfalls of idiopathic azygos vein aneurysm: A case report Reviewed
Mayu Inomata, Fumiya Kawano, Ryusei Yamada, Ryo Maeda
International Journal of Surgery Case Reports 2024.9
Authorship：Lead author Publishing type：Case report
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Radiological features of intrathoracic chronic expanding hematoma: A case report Reviewed
猪俣 麻佑, 黒木 将英, 中田 博, 河野 文耶, 前田 亮
International Journal of Surgery Case Reports 110 108767 2023.9
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier
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. -
Pleomorphic adenoma of the trachea: A case report Reviewed
Mayu Inomata, Shoei Kuroki, Nobuyuki Oguri, Yuichiro Sato, Fumiya Kawano. Ryo Maeda
International Journal of Surgery Case Reports 2023.7
Authorship：Lead author Language：English Publishing type：Case report
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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 Case of Minute Carcinoma in Situ in the Ascending Colon with Sign of Leser-Trélat
Hara Daisuke, Kai Kengo, Ikeda Takuto, Ichihara Akiko, Inomata Mayu, Kanemaru Shiho, Kiwaki Takumi, Kataoka Hiroaki, Nanashima Atsushi
The Japanese Journal of Gastroenterological Surgery 55 ( 11 ) 701 - 708 2022.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Gastroenterological Surgery
A 74-year-old man presented to the dermatology department of our hospital with multiple eruptions with itching. Leser-Trélat was suspected due to a rapid increase in seborrheic keratosis. Colonoscopy revealed a 35-mm multinodular polypoid lesion with a laterally spreading tumor that was partially non-granular. The tumor was diagnosed as carcinoma in adenoma with submucosal invasion. Because of the difficulty of endoscopic en bloc resection, laparoscopic ileocecal resection was performed in our department. A pathologic examination revealed that the resected cancer was a minute carcinoma in situ, of only 500 μm in size. We confirmed that the skin lesions were related to the Leser-Trélat sign, based on improvement of the skin after resection of colon cancer and high expression of epidermal growth factor receptor in the skin lesions. The Leser-Trélat sign, a skin symptom of paraneoplastic dermadromes, is frequently associated with gastrointestinal cancers, such as gastric and colorectal cancer, and is reported to be associated with advanced stage disease. In contrast, reports of the sign in association with early colorectal cancer are rare. Our search of the Japanese literature yielded only 3 cases in which the sign was described in submucosal invasive cancer and none involving intramucosal cancer. We present this case of minute carcinoma in situ in the ascending colon with a Leser-Trélat sign and review the relevant literature to investigate the clinical differences between cases of early and advanced cancer with a Leser-Trélat sign.