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Biomedical subjects

Y Itai

Publications and source records attributed to Y Itai.

At least 307 records · Page 17Linked to original sources
PubMed1977

Radiographic features of gastric polyps in familial adenomatosis coli.

Recent reports have noted a high frequency of elevated mucosal lesions of the stomach in patients with familial adenomatosis coli. This paper describes an additional 10 cases from six different families. Nine patients had sessile polyps in various portions of the stomach. Six of these have been examined histologically; two were adenomatous and four hyperplastic. The need for meticulous examination of the stomach in patients with multiple colonic polyposis is emphasized.

Adenoma↗
PubMed1977

Diffuse finely nodular lesions of the esophagus.

Double contrast study of the esophagus revealed a variety of diffuse finely nodular lesions, some of which have not been adequately reported. Acanthosis nigricans, superficial spreading esophageal cancer, leukoplakia, moniliasis, and esophagitis were found to produce this appearance. Typical cases of the first three diseases are demonstrated and the differential diagnosis discussed.

Acanthosis Nigricans↗
PubMed1976

Radiological manifestations of oesophageal involvement in acanthosis nigricans.

Radiologic features of two cases of acanthosis nigricans with oesophageal involvement are reported. The first case demonstrated diffuse, granular shadows throughout the oesophagus which were difficult to differentiate from oesophageal moniliasis. Another case showed many discrete and tiny elevations resembling pseudopolyposis of the colon. Emphasis is placed on radiological differential diagnosis from moniliasis and leukoplakia of the oesophagus.

Acanthosis Nigricans↗
PubMedDate not supplied

Establishment of a new cell line from a woodchuck hepatocellular carcinoma.

A new cell line derived from a woodchuck hepatitis surface antigen-positive woodchuck hepatocellular carcinoma has been established and named T3-HEP-W1. This new cell line was established directly from a primary woodchuck hepatocellular carcinoma. Adaptation of the cells to the in vitro culture condition was completed after 3 months, with the doubling time of 24 hr. The morphologic features of the cell by light microscopy were of an epithelial type. The modal chromosome number was 100. Ornithine and tyrosine aminotransferase activities were detected. Production of albumin was negative. Integration of woodchuck hepatitis virus DNA was demonstrated by Southern blot analysis, although the secretion of woodchuck hepatitis surface antigen was not detected. T3-HEP-W1 is quite different from the previously reported WH257GE10 cell line and provides another in vitro model for the study of human hepatocellular carcinoma related to hepatitis B virus.

Animals↗
PubMedDate not supplied

Hepatic tumors: magnetization transfer MR imaging with gadolinium enhancement.

Thirty patients with 15 hepatocellular carcinomas, 10 metastases, four hemangiomas, and one cholangiocarcinoma underwent magnetic resonance imaging at 1.5 T with T1-weighted, T2-weighted spin-echo (SE) images, gradient-echo (GRE) magnetization transfer (MT) images, and gadolinium-enhanced T1-weighted SE and MT-GRE images. The MT effect and lesion-liver contrast-to-noise ratio (C/N) were calculated and visual assessment (qualitative analysis) performed for unenhanced and enhanced MT-GRE images and enhanced T1-weighted SE images. The C/N values for hepatic adenocarcinomas (seven metastases and one cholangiocarcinoma) and hemangiomas were larger for enhanced MT-GRE images (adenocarcinoma, 8.4 +/- 2.3 [P < .01]; hemangioma 24 +/- 2.1 [P < .05]) than for enhanced GRE images (5.0 +/- 1.9 and 18 +/- 2.7, respectively). These enhancing tumors had the highest scores in the qualitative analysis. Enhanced MT-GRE images showed no advantage for depiction of hepatocellular carcinomas relative to the other images.

Adenocarcinoma↗
PubMedDate not supplied

High resolution MR imaging of the bilateral hips with dual phased-array coil.

We applied dual-flex coils in a phased-array configuration to obtain high resolution MR images of the bilateral hips and compared the image quality with non-phased-array imaging. Multiple fast spin-echo images of both hips were obtained in a single acquisition. Two consecutive acquisitions with and without phased-array capability were performed in 22 hips and a fluid-filled phantom. The signal-to-noise ratio (S/N) enhancement values were calculated. Subjective image analysis was also obtained from three independent reviewers. High quality MR images were obtained using dual-array coils with a S/N enhancement value of 1.40 for a phantom and 1.83 to 2.22 for subject hips. On subjective analysis, the dual array enhanced delineation of the acetabular labrum, articular cartilage, and retained fluid. The dual array may be of diagnostic value with a higher S/N enhancement and subjective superiority of the images obtained.

Acetabulum↗