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Biomedical subjects

M Tateyama

Publications and source records attributed to M Tateyama.

87 records · Page 5Linked to original sources
PubMed1984

So-called nasal glioma.

Nasal glioma is heterotopic brain tissue which usually presents as a tumor around the nose of children and infants. We have encountered two cases of nasal glioma during the past nine years at Hokkaido University Hospital. One showed a tumor in the subcutis of the nasal bridge and the other a polypoid mass arising in the soft palate. Both consisted of proliferation of fibrillary spindle cells consistent with fibrillary astrocytes divided by fibrovascular septa. This was reminiscent of "gliosis" of the central nervous system. Occasional protoplasmic astrocytes were present in both and, in addition, one case showed neuronal cells and choroid plexus. The glial nature of the lesion was confirmed by the presence of glial fibrillary acidic protein demonstrated by the immunoperoxidase method. Nasal glioma is not neoplastic contrary to its name and is considered heterotopic brain tissue which was displaced during fetal development by similar pathogenetic mechanisms of sincipital and basal encephalocele, although its communication to the brain was lost.

Astrocytes↗
PubMed1984

Renal actinomycosis associated with a duodenorenal fistula caused by foreign body.

We are reporting a case of a rare renal actinomycosis in a 12-year-old mentally-retarded girl. Proteinuria and hemopyuria were pointed out one year before the operation by an annual medical check-up and IVP subsequently performed showed foreign bodies at the upper pole of the right kidney. The patient continued to have pyuria and right nephrectomy was performed. There was a fistula between the duodenum and the upper portion of the right kidney. Foreign bodies (two bobby pins) were found in the kidney. Subsequent pathologic examination of the resected kidney revealed an actinomycotic lesion.

Actinomycosis↗
PubMed1984

[Primary malignant melanoma of the breast].

A 30-year-old woman with malignant melanoma of the breast is reported. She palpated a tumor in the upper outer quadrant of the left breast. Physical examination and mammographic findings suggested a benign tumor and excisional biopsy was performed. A cut surface of the tumor showed a few black spotty lesions. Pathologic examination revealed infiltration of melanoma cells around the mammary glands and ducts and the connective tissue. Melanoma cells were present in the mammary ducts, suggesting that these cells originated from the ductal epithelium.

Adult↗
PubMedDate not supplied

Is paranoid schizophrenia the most common subtype? Comparison of subtype diagnoses by Japanese and European psychiatrists, using the summaries of the same patients.

We compared the subtype diagnoses of schizophrenia (ICD-10) of 58 Japanese and 61 European psychiatrists matched for clinical experience using 10 case summaries. As a result, there are marked differences between Japanese and European psychiatrists in the mode of subtype diagnoses of schizophrenia rather than in the clinical pictures of the patients themselves; the hebephrenic type (F20.1) was more likely to be diagnosed by Japanese psychiatrists, while the paranoid type (F20.0) was more frequently diagnosed by European psychiatrists. Japanese psychiatrists take into account the patient's age at onset and the clinical course of the disease in identifying the subtype, while European psychiatrists tend to focus on the presenting symptoms, particularly paranoid symptoms.

Adolescent↗