Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Arafumi Maeshima.
World Journal of Surgical Oncology | 2010
Taichiro Goto; Arafumi Maeshima; Yoshitaka Oyamada; Ryoichi Kato
BackgroundPulmonary metastasis from prostate cancer is considered to be a late event, and patients can be treated with chemotherapy or hormonal manipulation. However, there has been only a few reports on surgical resection for pulmonary metastasis from prostate cancer.Case PresentationWe present a surgical case of solitary pulmonary metastasis from prostate cancer. A 73-year-old man underwent pelvic evisceration for prostate cancer. Histopathological examination revealed a poorly differentiated adenocarcinoma with a sarcomatoid carcinoma component. During postoperative follow-up, chest computed tomography showed a nodular shadow in the lung, and thoracoscopic wedge resection of the lung was performed. Histopathological examination revealed a histological appearance similar to that of the prostate sarcomatoid carcinoma. This is the first reported case of solitary pulmonary metastasis from prostate sarcomatoid cancer.ConclusionIsolated pulmonary metastasis from prostate sarcomatoid cancer is extremely rare, but surgery could be the treatment of choice.
World Journal of Surgical Oncology | 2011
Taichiro Goto; Kumi Akanabe; Arafumi Maeshima; Ryoichi Kato
BackgroundCases of recurrent inflammatory pseudotumor have only rarely been reported. The treatment for recurrent pseudotumor is surgery. Patients not eligible for surgery require different treatment, and the optimal type of the treatment is controversial.Case PresentationA 54-year-old woman was noted to have an abnormal shadow in the right middle lung field on chest X-ray. Computed tomography of the chest revealed an infiltrative lesion in the right segment 4 and a nodule in the right segment 8. She underwent right middle lobectomy and partial resection of the right segment 8. Histopathology revealed non-atypical lymphocytes and plasma cells infiltrates, leading to the diagnosis of the lymphoplasmacytic type of inflammatory pseudotumor. During postoperative follow-up, chest computed tomography revealed a nodular lesion in the left segment 3 and an infiltrative lesion in the right segment 2. Left segment 3 segmentectomy and right segment 2 wedge resection were performed. The histopathological findings were similar to those of the first surgical specimen, leading to the diagnosis of recurrent lymphoplasmacytic type of inflammatory pseudotumor.ConclusionSurgical cases of recurrent inflammatory pseudotumor of the lung have been reported only very rarely. We believe that surgery is the best treatment for recurrent inflammatory pseudotumor of the lung when patients are eligible.
Interactive Cardiovascular and Thoracic Surgery | 2010
Taichiro Goto; Arafumi Maeshima; Yoshitaka Oyamada; Ryoichi Kato
A 52-year-old man noted large amounts of bloody sputum and visited our hospital. Chest X-ray showed a mass shadow in the right upper lung field. He was diagnosed with squamous cell carcinoma (SCC). Although he was not aware of symptoms other than the bloody sputum, his blood chemistry showed a high total serum protein level of 10.6 g/dl. Further analysis of serum immunoglobulin revealed a markedly high immunoglobulin G (IgG) level, but an abnormally low level of immunoglobulin A (IgA) and immunoglobulin M (IgM). Serum immunoelectrophoresis detected IgG-lambda monoclonal protein; therefore, we suspected the coexistence of multiple myeloma, amyloidosis, benign macroglobulinemia, or benign monoclonal gammopathy. Since the patient continued to expectorate large amounts of bloody sputum every day, and his anemia progressed, right upper lobectomy and lymph node dissection were performed on a semi-emergent basis without preoperative bone marrow examination. On thoracotomy at the level of the fifth intercostal space, the fifth and sixth ribs were partially resected posteriorly, and the resected ribs were submitted for pathological examination. The postoperative pathological diagnosis was SCC of the lung (p-T2N0M0, stage IB). Pathological examination of the ribs revealed IgG-lambda myeloma. Herein, we report a patient with lung cancer in whom multiple myeloma was definitively diagnosed from rib specimens resected at thoracotomy.
Interactive Cardiovascular and Thoracic Surgery | 2010
Taichiro Goto; Arafumi Maeshima; Yoshitaka Oyamada; Ryoichi Kato
The patient was a 59-year-old woman in whom computed tomography revealed a posterior mediastinal cyst and ovarian cystoma at a medical check-up in March 2007. Blood tests showed high CA19-9 and CA125 levels. She underwent left adnexectomy for ovarian cystoma in July 2008 and histopathological examination led to a diagnosis of dermoid cyst. The postoperative levels of CA19-9 and CA125 remained high. She developed dysphagia in February 2009, and the posterior mediastinal cyst showed a tendency to enlarge. Therefore, she underwent tumorectomy through a small thoracotomy. The cyst contained greenish fluid with CA19-9 and CA125 contents of 65,000 and 78,000 U/ml, respectively. Histologically, the cyst had a thickened wall, which contained two muscle layers, and was lined by squamous and pseudostratified ciliated epithelium. No cartilage or bronchial glands were identified. These findings led to a diagnosis of esophageal cyst. On immunohistochemical staining, the cyst-lining epithelial cells were positive for CA19-9 and CA125. The serum CA19-9 and CA125 levels returned to normal two months after surgery. We report a resected case of esophageal cyst producing CA19-9 and CA125.
International Journal of Infectious Diseases | 2015
Yohei Funatsu; Takahiko Oyama; Katsutaka Mineura; Arafumi Maeshima; Takashi Okabe; Hironori Ueno; Takahiro Yano; Yoshitaka Oyamada; Ryoichi Kato
http://dx.doi.org/10.1016/j.ijid.2015.03.023 1201-9712/ 2015 The Authors. Published by Elsevier Ltd on behalf of International So license (http://creativecommons.org/licenses/by-nc-nd/4.0/). initiated for her febrile neutropenia. Chest computed tomography revealed infiltrates in the right upper lobe (Figure 1A), and the patient subsequently complained of worsening chest pain. Sequential computed tomography images revealed the invasion of the lesion into her chest wall and the eventual formation of a cavity, with rib fractures (Figure 1B–F). The decision was made to
Internal Medicine | 2015
Shuichi Yoshida; Arafumi Maeshima; Kazuyuki Fujimoto; Rie Jo; Kyoko Iwase; Yoshitaka Oyamada
Small cell lung cancer (SCLC) causes paraneoplastic syndromes, such as diabetes mellitus, by eliciting the expression of various antibodies including anti-glutamate decarboxylase (GAD) antibody. A 62-year-old woman presented to our hospital with a 1-week history of progressive dyspnea and difficulty in walking. Computed tomography showed a tumor obstructing the left bronchus and obstructive lung abscesses with pleural effusions. A biopsy during bronchoscopy revealed SCLC, and the clinical stage was ultimately determined to be IIIB. SCLC was complicated by diabetes mellitus with high titers of serum anti-GAD antibody. An immunohistochemical analysis showed GAD expression in the cancer cells, which is a novel finding.
Annals of Thoracic and Cardiovascular Surgery | 2011
Taichiro Goto; Arafumi Maeshima; Kumi Akanabe; Reo Hamaguchi; Misa Wakaki; Yoshitaka Oyamada; Ryoichi Kato
Annals of Thoracic and Cardiovascular Surgery | 2011
Taichiro Goto; Arafumi Maeshima; Kumi Akanabe; Yoshitaka Oyamada; Ryoichi Kato
Annals of Thoracic and Cardiovascular Surgery | 2010
Taichiro Goto; Arafumi Maeshima; Atsushi Tajima; Ryoichi Kato
Journal of Cancer | 2011
Taichiro Goto; Arafumi Maeshima; Yoshitaka Oyamada; Ryoichi Kato