H Yano

Kurume University, Куруме, Fukuoka, Japan

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Publications (4)5.41 Total impact

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    ABSTRACT: The prognostic significance of neutropenic fever in lung cancer patients receiving chemotherapy with or without radiotherapy was investigated. Male patients and patients with squamous cell lung cancer had a higher incidence of febrile episodes than female patients and patients with other cell types, but the differences were not significant. Patients with a poor performance status had a significantly higher incidence of febrile episodes. An indwelling central venous catheter was an important risk factor for febrile episodes, indicating that bacteremia was one of the major causes of fever. The median survival time of the patients who developed febrile episodes during chemotherapy was significantly shorter than that of patients without fever (6.1 vs 12.0 months), whether or not cases of early death within 3 months were excluded (8.9 vs 13.1 months). The prevention of infectious complications during anticancer treatment by the use of rh G-CSF and the early initiation of antimicrobial chemotherapy, although the results are inconclusive, may be worthwhile.
    Supportive Care Cancer 08/1998; 6(4):396-401. · 2.65 Impact Factor
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    ABSTRACT: Erosive and ulcerous endobronchial tuberculosis (EBTB) is distinct from pulmonary tuberculosis in some aspects. We evaluated the clinical features of 56 patients (26 males and 30 females) with EBTB to characterize the clinical features of the disease. The chief complaint in 70% of patients was intractable cough, particularly in those with tracheal tuberculosis. The predominant radiological features were patchy bi-apical infiltrates of variable intensity without cavitation; for six patients, however, plain radiographs revealed no abnormalities. The ulcerous lesions could be classified into three stages: active, healing and scarring. Furthermore, we divided scarring stage into two subtypes, polypoid and non-polypoid. Most of the patients were treated with isoniazid, rifampin, and streptomycin (SM) or ethambutol. Approximately one-third of the patients, not randomly selected, were treated with aerosolized SM and corticosteroids in addition to conventional oral therapy. EBTB involves typical clinical and radiographic features. In this uncontrolled series, it was our impression that the period of time to healing of ulcerous lesions seemed to be shorter in those treated with aerosol therapy including streptomycin and corticosteroids.
    The International Journal of Tuberculosis and Lung Disease 08/1998; 2(7):558-62. · 2.76 Impact Factor
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    ABSTRACT: We examined the clinical features and significance of pathogenic microbes isolated from sputum and blood of patients with lung cancer during anti-cancer therapy. Pathogenic bacteria were more likely to be isolated from patients with episodes of fever than from afebrile patients. The major species of bacteria isolated from sputum were Staphylococcus aureus, including methicillin-resistant strains, and Gram-negative bacilli, which are known to be frequently involved in hospital-acquired infections. The presence of an indwelling central venous catheter for intravenous hyperalimentation was an important risk factor for the development of a febrile episode, which indicates that bacteremia was a major cause of fever. In one quarter of the blood cultures from the patients with persistent fever, various species of pathogenic microbes were recovered, one-third of which were fungi. Bacteriological examinations done before and after the introduction of granulocyte-colony stimulating factor (G-CSF) revealed that strains of Klebsiella spp. decreased and those of methicillin-resistant S. aureus increased. There was no firm evidence that G-CSF decreased the incidence of episodes of fever. However, remains G-CSF may a allow the dose intensity of anti-cancer agents to be increased, which would lead to severe leukocytopenia. However, more detailed investigation is needed to clarify the role of G-CSF against bacterial infection during anti-cancer therapy.
    Nihon Kyōbu Shikkan Gakkai zasshi 11/1995; 33(10):1058-63.
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    ABSTRACT: Biochemical assays have demonstrated the existence of hormone receptors in lung tissue from patients with pulmonary lymphangiomyomatosis (LAM). This finding is the biologic corollary to the finding that LAM responds to hormonal therapy. We have examined lung tissue from two patients with LAM for estrogen and progesterone receptors by immunohistochemistry and a biochemical assay. Although specimens from both patients were negative for estrogen receptor activity by the biochemical assay, positive stain of estrogen receptors was observed in both patients with immunohistochemistry.
    The Kurume Medical Journal 02/1995; 42(3):141-4.