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Biomedical subjects

H Takaya

Publications and source records attributed to H Takaya.

34 records · Page 2Linked to original sources
PubMed1995

[A case of sacral neuroblastoma in an adult successfully treated with combination chemotherapy].

A 35-year-old woman was admitted with complaints of severe posterior femoral pain and was diagnosed as having sacral neuroblastoma by tumor open biopsy. After admission, combination chemotherapy consisting of CDDP, etoposide, CPA, and THP was started intra-arterially and intravenously. After 2 courses of chemotherapy, her symptoms markedly improved and the tumor size was reduced. Now, after completion of 16 courses of chemotherapy, she is in a state of partial remission. Hereafter, we intend to reconsider the treatment strategy including surgical therapy.

Adult↗
PubMed1995

A visual telemedicine system: the integration of ordinary TV and HDTV still image transmission.

This paper describes a project to develop and test a new telemedicine system using image transmission. The system was implemented at Aomori prefecture, the northernmost prefecture of Japan, to provide medical consultation to remote hospitals from a medical center located in Aomori city, capital of the prefecture. The characteristics of the system are the combination of an HDTV still image transmission system and an ordinary tele-conference system using 65 kilobit telephone line i.e., an ordinary telephone line available in almost any part of Japan. We also developed a disk storage system that stores transmitted images automatically without human intervention. The system was assessed in real clinical settings and has proved to be effective in various areas of medical consultation, including radiology, pathology, dermatology, etc. We hope that this system becomes a standard telemedicine system in the future.

Computer Peripherals↗
PubMed1992

[An autopsy case of four primary cancers including malignant meningioma].

The authors describe an autopsy case of a 68-year-old man with four primary cancers diagnosed at autopsy including malignant meningioma, early esophageal cancer, early gastric cancer and lung cancer. Recently, the number of patients with four and five primary cancers has been increasing. According to the Annual of the Pathological Autopsy Cases in Japan, 156 cases were reported during 16 years from 1974 to 1989. In this series, cancers were detected most frequently in stomach, colon, lung, prostate, liver and esophagus. However, only two cases with four and five primary cancers including malignant meningioma were reported. Because occult cancers like prostatic cancers are unexpectedly diagnosed at autopsy, the incidence of four and five primary cancers including malignant meningioma seems to be higher when the central nervous system is examined more frequently at autopsy.

Adenocarcinoma↗
PubMed1977

Types of neural tissues induced through the presumptive notochord of newt embryo.

Neural induction through the presumptive notochord was tested by means of the sandwich method. The result disclosed that the notochord was a potent inducer of neural tissues not only in the ectoderm of gastrula but also in the ventral ectoderm of neurula and early tail-bud embryos. Structures formed by the induced neural tissue varied greatly. They can be classified into three types. (1) Tubular: the neural tissues induced in explants containing abundant mesenchymes always formed long tubular structures. The shapes of these neural tubes showed considerable variation; moreover, they were atypical and none formed the regular structure of the spinal cord. This type was most frequent, being found in about 50% of the explants. (2) Inverted: this type was produced when the explant contained mesenchymal component. Consequently, the epithelium of explants was missing. Nevertheless, a considerable mass of neural tissue was always induced. It was noticed that the induced neural tissues were invariably inside out; this type was found in about 30% of the explants.(3) Archencephalic: this was the only type to form the regular structure, i.e., the archencephalon. Formation of the archencephalon was limited solely to those explants containing only a few mesenchymes; this type was found in about 20% of the cases. As described above, it was found that the neural tissues induced by the same inducer of the notochord were not uniform but varied in type. Further it was shown that the types of neural tissue differed according to different quantities of the surrounding mesenchyme. Based on these facts, it is to be concluded that it is not the inducer of notochord, but the surrounding mesenchyme that is of primary importance for the determination of the types of neural tissue.

Animals↗
PubMed1977

Stomach cancer of a 14-year-old boy with ataxia-telangiectasia.

A 14-year-old boy with ataxia-telangiectasis died of pneumonia, stomach cancer and its diffuse metastasis. The onset of walding gait was noticed from 3 years of age. Immune globulin including IgA was normal or slightly increased. Main autopsy findings were: old cancerous ulcer of 1.4 X 2.3 cm at the lesser curvature, and diffuse cancer infiltration over ulcer surface to serous membrane. The tumor was diagnosed histologically as adenocarcinoma tabulare mucocellulare.

Adenocarcinoma, Mucinous↗