Keiichi Iwabuchi

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PURPOSE The purpose of this study was to investigate the utility of diffusion-weighted imaging (DWI) and the apparent diffusion coefficient (ADC) value in differentiating benign and malignant breast lesions and evaluating the detection accuracy of the cancer extension. MATERIALS AND METHODS We used DWI to obtain images of 191 benign and malignant lesions(More)
The authors used breast diffusion-weighted imaging (DWI) to diagnose breast cancer and identify cancer extension. Isotropic DWI was performed with EPI. The apparent diffusion coefficient (ADC) value was calculated and displayed on an ADC map. The authors compared between the distribution of low ADC values and pathologic cancer extension. The mean ADC value(More)
PURPOSE To compare the capability of diffusion-weighted (DW) and contrast material-enhanced magnetic resonance (MR) imaging to provide diagnostic information on residual breast cancers following neoadjuvant chemotherapy and to assess apparent diffusion coefficients (ADCs) of the carcinoma prior to neoadjuvant chemotherapy to determine if the method could(More)
OBJECTIVE The purposes of this study were to compare the apparent diffusion coefficient (ADC) of mucinous carcinoma of the breast with that of other breast tumors and to analyze correlations between signal intensity on diffusion-weighted images and the histologic features of mucinous carcinoma. SUBJECTS AND METHODS Two hundred seventy-six patients with(More)
We describe the first patient with hereditary spherocytosis (HS) known to have developed splenic infarction following infectious mononucleosis (IM). An 18-year-old Japanese man was referred to our hospital in November 2004 because of continuous fever and icterus. He had undergone cholecystectomy at the age of 14 years. On patient admission in November 2004,(More)
A case is reported here of a patient with a giant multilocular prostatic cystadenoma who presented with gross hematuria and underwent extensive surgical resection. A 35-year-old man presented with asymptomatic gross hematuria. Magnetic resonance imaging of the pelvis demonstrated a multilocular mass replacing the prostatic gland. At exploration the urinary(More)
OBJECTIVE Uterine cervical adenocarcinoma (CAC) is a rare form of cervical cancer, constituting only 5-8% of all cervical epithelial malignancies. Loss of heterozygosity (LOH) analysis of CAC was undertaken to identify alterations of chromosomal loci that may play important roles in the development of this tumor type. METHODS We analyzed loss of(More)
OBJECTIVES To determine the expression patterns and prognostic value of S100A2 and S100A4 in surgical specimens from radical cystectomy for transitional cell carcinoma of the urinary bladder. METHODS Immunohistochemical staining for S100A2 and S100A4 was performed in 92 archived radical cystectomy and 38 normal specimens. The immunoreactivity of these(More)
In a fatal occurrence of massive liver necrosis following ingestion of concentrated (90%) acetic acid, the patient showed evidence of hemolysis, disseminated intravascular coagulation, and liver dysfunction at only 45 minutes after exposure. With refractory to vigorous supportive care, the patient s condition deteriorated until death occurred 39 hours after(More)
This paper presents a case of a symptomatic giant retroperitoneal cyst in an adult male. The unilocular cyst was excised successfully with resolution of the attendant symptoms. Histological findings of the cyst wall suggested a lymphangiomatous etiology. Any good risk patient found to harbor such a cyst should undergo complete excision in view of the(More)