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Beppu, Japan

Nishida H.,Oita University | Daa T.,Oita University | Kashima K.,Oita University | Arakane M.,Oita University | And 4 more authors.
American Journal of Dermatopathology | Year: 2015

KIT (CD117, c-kit) is a receptor tyrosine kinase involved in the tumorigenesis of several neoplasms. KIT is expressed by the secretory cells of normal sweat glands. We studied the KIT expression and KIT mutational status in various benign and malignant tumors of eccrine and apocrine glands. We included a total of 108 cases comprising 10 benign and 6 malignant sweat gland tumors, and KIT expression was immunohistochemically detected (positive rate): 10 syringomas (0%), 8 poromas (25%), 20 mixed tumors (40%), 21 spiradenomas (43%), 1 cylindroma (0%), 5 hidradenomas (40%), 7 syringocystadenoma papilliferum cases (0%), 1 papillary hidradenoma (100%), 2 tubulopapillary hidradenomas (50%), 8 hidrocystomas (29%), 2 adenoid cystic carcinomas (100%), 5 porocarcinomas (20%), 6 apocrine carcinomas (33%), 10 extramammary Paget diseases (30%), 1 spiradenocarcinoma (100%), and 1 syringocystadenocarcinoma papilliferum (0%). Most KIT-positive cells were luminal cells, arising from glandular structures. We performed polymerase chain reaction-single-strand conformation polymorphism for detecting KIT mutational status. All cases showed no mutations at hot spots for KIT (exons 9, 11, 13, and 17). KIT mutation does not seem to be mechanism for KITexpression, but the expression may be from native sweat glands. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.

Shikada Y.,Beppu Medical Center
Kyobu geka. The Japanese journal of thoracic surgery | Year: 2010

We report a case of delayed massive hemothorax, a 72-year-old women, due to diaphragmatic injury by multiple lower rib fracture on 4th day aftrer traffic injury. We tried to stop bleeding by transcatheter arterial embolization, but the control of bleeding was difficult, necessitating the emergency surgery. The diaphragmatic injury about 3 cm diameter was found, and was sutured with absorption thread. The post operative course was uncomplicated. Patient was discharged on 51th day after injury. Careful observation is important for delayed hemothorax after lower rib fracture.

Matsumoto Y.,Hiroshima University | Miyamoto T.,Hiroshima University | Sakamoto H.,Hiroshima University | Izumi H.,Hiroshima University | And 10 more authors.
DNA Repair | Year: 2011

MRE11 and NBS1 function together as components of a MRE11/RAD50/NBS1 protein complex, however deficiency of either protein does not result in the same clinical features. Mutations in the NBN gene underlie Nijmegen breakage syndrome (NBS), a chromosomal instability syndrome characterized by microcephaly, bird-like faces, growth and mental retardation, and cellular radiosensitivity. Additionally, mutations in the MRE11A gene are known to lead to an ataxia-telangiectasia-like disorder (ATLD), a late-onset, slowly progressive variant of ataxia-telangiectasia without microcephaly. Here we describe two unrelated patients with NBS-like severe microcephaly (head circumference -10.2 SD and -12.8 SD) and mutations in the MRE11A gene. Both patients were compound heterozygotes for a truncating or missense mutation and carried a translationally silent mutation. The truncating and missense mutations were assumed to be functionally debilitating. The translationally silent mutation common to both patients had an effect on splicing efficiency resulting in reduced but normal MRE11 protein. Their levels of radiation-induced activation of ATM were higher than those in ATLD cells. © 2010 Elsevier B.V.

Tsutsui S.,Red Cross | Matsuyama A.,Red Cross | Yamamoto M.,Red Cross | Takeuchi H.,Beppu Medical Center | And 3 more authors.
Oncology Reports | Year: 2010

Akt activation has been found in various human cancers, while experimental studies have suggested that Akt plays an important role in the development of tumor angiogenesis and lymphangiogenesis. Immunohistochemical analyses for VEGF-C and Akt and the lymphatic endothelial specific marker D2-40 were performed on a series of 242 invasive ductal carcinomas of the breast, in which VEGF-A expression and microvessel density (MVD) had been determined previously. Lymphatic vessel density (LVD) was estimated in three hot spots. A significant correlation was observed between the VEGF-C expression and LVD (p=0.0026) and between LVD and the lymph node status (p<0.0001). The VEGF-C expression, however, did not correlate significantly with the lymph nodes status, while a high VEGF-C expression was associated with a smaller tumor size (p=0.0188). There was a significant correlation between VEGF-C and VEGF-A expression (p=0.0079) and between LVD and MVD (p=0.0008). The VEGF-C expression correlated with MVD (p<0.0001), while the VEGF-A expression correlated with LVD (p=0.0155). The Akt expression correlated with VEGF-A (p=0.0173) and -C expression (p=0.0056) as well as MVD (p=0.0482) and LVD (p=0.0012), while the correlation of Akt expression to VEGF-C expression and LVD was stronger than that to VEGF-A expression and MVD. Although the patients with a high LVD have a poorer disease-free survival than those with a low LVD (p=0.0005), a multivariate analysis determined the lymph node status and MVD to be independently significant factors for the disease-free survival. In conclusion, the correlation of both VEGF-C and VEGF-A to LVD and MVD suggested the two growth factors to be involved in both angiogenesis and lymphangiogenesis in breast cancer. The correlation of the Akt expression to the VEGF-A and -C expression as well as MVD and LVD, thus, suggested Akt activation to contribute to both angiogenesis and lymphangiogenesis via VEGF-A and -C expression in breast cancer.

Somehara R.,Beppu Medical Center
Japanese Journal of Clinical Radiology | Year: 2016

Nodular fasciitis is a benign proliferation of fibroblastic or myofibroblastic cells. This is a case report of nodular fasciitis of the periorbital area in a 2-year-old boy, resembled a cystic tumor on MRI findings. However, it revealed solid fibrous lesion on histopathological findings. Nodular fasciitis can show cyst-like appearance in its early stage, and its character may change as it grows.

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