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Takahiro Hirayama
Kitasato University
CancerUrologySurgeryRenal cell carcinomaMedicine
53Publications
4H-index
58Citations
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Publications 56
Newest
#1Ben H. Chew (UBC: University of British Columbia)H-Index: 26
#2Justin M. Chan (UBC: University of British Columbia)H-Index: 7
Last. Dirk Lange (UBC: University of British Columbia)H-Index: 18
view all 7 authors...
Purpose: Ureteral stents are fraught with complications. Not much is known regarding what causes these issues. Studies suggested that discoloration of indwelling stents changes surface characterist...
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BACKGROUND: No study has yet investigated the use of electronic nose (eNose) technology to reveal pattern recognition of urological diseases, including bladder cancer. OBJECTIVE: We sought to determine the diagnostic performance of the eNose in recognizing urinary odour in patients with bladder cancer. METHODS: The eNose is a commercially available model equipped with two sensors. The angle of the two sensors (theta) depends on the kinds of chemical substances, thus defining theta as the feature...
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#1Megumi NomuraH-Index: 1
#2Takahiro Hirayama (Kitasato University)H-Index: 4
Last. Masatsugu IwamuraH-Index: 21
view all 7 authors...
: We here report a case of dermatomyositis associated with ureteral cancer. A 69-year-old male presented to our hospital complaining of a rash on his whole body, which resulted in a clinical diagnosis of dermatomyositis. Right ureteral cancer was suspected on computed tomographic CT examination during the investigation for the underlying malignancy. The patient was treated with prednisolone and right nephroureterectomy with bladder cuffing for dermatomyositis and ureteral cancer, respectively. O...
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We report a case of synchronous primary corpus and ovarian cancer (SPC) with massive ascites due to Pseudo-Meigs syndrome (PMS). A 48-year-old woman presented with complaints of abnormal genital bleeding and abdominal discomfort. Massive ascites and tumors in the endometrium and right ovary were detected. Although imaging tests showed no evidence of dissemination, and ascites cytology was negative, we performed a diagnostic laparoscopy to exclude the possibility of microdissemination because pat...
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#1Tetsuo Fujita (Kitasato University)H-Index: 13
#2Takahiro Hirayama (Kitasato University)H-Index: 4
Last. Masatsugu Iwamura (Kitasato University)H-Index: 21
view all 6 authors...
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#1Yasukiyo Murakami (Kitasato University)H-Index: 1
#2Kazumasa Matsumoto (Kitasato University)H-Index: 31
Last. Masatsugu Iwamura (Kitasato University)H-Index: 21
view all 11 authors...
Background No definitive evidence exists regarding the clinical significance of histologic variants (HV) in upper urinary tract cancer. We investigated the impact of HV on prognosis in patients with upper urinary tract cancer following radical surgery.
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#1Dai Koguchi (Kitasato University)H-Index: 2
#2Kazumasa Matsumoto (Kitasato University)H-Index: 31
Last. Masatsugu Iwamura (Kitasato University)H-Index: 21
view all 11 authors...
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The simultaneous or sequential development of autoimmune hemolytic anemia (AIHA) and idiopathic thrombocytopenic purpura (ITP) is known as Evans syndrome. We experienced a case of Evans syndrome that developed AIHA during pregnancy and ITP long after delivery. The patient was a 35-year-old pregnant woman (gravida 2, para 1). A routine blood test at 28 weeks of gestation revealed moderate macrocytic anemia. Her haptoglobin level was markedly low, and a direct antiglobulin test (DAT) was positive....
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Congenital ATIII deficiency is one of the congenital thrombophilia diseases that can cause severe venous thromboembolism (VTE) in pregnant patients. A 30-year-old female, 4 gravida and 2 para, came to the emergency department with a complaint of oedema and pain in the left lower leg at 11 weeks of gestation. An inferior vena cava thrombus and pulmonary embolism were found. Because VTE was very severe, artificial abortion was performed, and VTE disappeared rapidly. She maintained oral administrat...
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#1Dai Koguchi (Kitasato University)H-Index: 2
#2Kazumasa Matsumoto (Kitasato University)H-Index: 31
Last. Masatsugu Iwamura (Kitasato University)H-Index: 21
view all 11 authors...
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