Chronic Schistosomiasis Japonica Cases in the Tone River Basin, Honshu, and its Early Diagnosis

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  • TANAKA Manami
    Department of Medical Biology, Institute of Basic Medical Sciences, University of Tsukuba
  • IRIE Yuji
    Department of Medical Biology, Institute of Basic Medical Sciences, University of Tsukuba
  • YASURAOKA Kazuo
    Department of Medical Biology, Institute of Basic Medical Sciences, University of Tsukuba
  • SATOH Akihito
    Department of Radiology, Toride Doctor's Association Hospital
  • MATSUMOTO Shigeru
    Department of Surgery, Toride Doctor's Association Hospital
  • HAKUTA Yasuo
    Department of Surgery, Toride Doctor's Association Hospital
  • NAKAMURA Naoshi
    Department of Surgery, Toride Doctor's Association Hospital
  • KAWAI Mieko
    Department of Internal Medicine, Kasumigaura National Hospital
  • EBIHARA Makoto
    Ebihara Medical Clinic

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Other Title
  • 関東地方利根川水系における慢性日本住血吸虫症とそのスクリーニング法
  • カントウ チホウ トネガワ スイケイ ニ オケル マンセイ ニホン ジュウケツ

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Abstract

Twelve cases of chronic schistosomiasis japonica associated with other diseases were studied. All the patients have lived for a long time in an old endemic area of schistosomiasis in Ibaraki Prefecture, Honshu, and have never been overseas nor in other schistosomiasis areas in Japan. In the 8 cases shistosome eggs were found in the ectomized organs (stomach, duodenum, liver and gall bladder) surgically operated under another diagnosis. The remaining 4 cases were diagnosed radiologically at the time of their medical checkups. Specific findings in these cases, fish scale pattern of liver ultrasonography and furnicular calcification and high density streak in liver C.T. may be of great value as an early diagnostic procedure of chronic schistosomiasis. No schistosome eggs were found in the 12 stool specimens. The 6 of the 12 sera were tested for S. Japonicum egg antibodies and all were found to be negative. Symptoms and signs were much different in each patient depending on the basal diseases. There were 4 cases complicated with malignant tumors like gastric cancer or hepatoma. It is very difficult to judge the time they became infected and the hatchability of the eggs can be noted only by the pathological findings. The hatching tests of eggs in the rectal biopsy specimens may be done to observe their viability.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 62 (2), 156-163, 1988

    The Japanese Association for Infectious Diseases

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