Yayoi Yamana

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We studied family members of 9 patients with falciform retinal fold, and found a number of cases showing features of familial exudative vitreoretinopathy (FEVR) in the fundi. Retinal fold was also seen in the eye of a cousin of the propositus. Three cases with falciform retinal fold were bilateral and 7 cases were unilateral. Retinal folds were located in(More)
As diabetic retinopathy progresses, the non-perfused area in the retina gradually enlarges as the capillaries are obstructed. To elucidate the process of capillary obstruction we examined macular capillaries in 104 diabetics, using fluorescein angiography. The follow-up period was three to eight years. We found that some capillaries in the macular were(More)
Plasma carcinoembryonic antigen (CEA) and alpha fetoprotein (AFP) levels were analyzed in 22 patients with retinoblastoma. In 13 patients, the titers could be determined both before and after treatment. The plasma CEA level was elevated in 4 to over 2.5 ng ml-1 prior to therapy, and the plasma AFP level was elevated in 4 to over 20 ng ml-1 before treatment.(More)
A prospective study was conducted in 36 diabetic patients to correlate the fasting blood sugar level (FBS) and the levels of hemoglobin A1 (HbA1) with the severity and progression of diabetic retinopathy. During an average follow-up of 12.6 +/- 2.9 months, the FBS and HbA1 levels were determined and progression of diabetic retinopathy assessed by(More)
level was elevated (428 mg/dL; normal, 90–400), but other laboratory tests, including platelet count and serum antineutrophil cytoplasmic antibody, were normal or negative. According to the consensus statement, the definitive diagnosis of IgA vasculitis was made. After the initial treatment with 20 mg/day (0.5 mg/kg per day) of prednisolone, abdominal(More)
Five children with retinoblastoma were treated using an argon laser photocoagulator and a hematoporphyrin derivative. Fluorescein angiography after the photoradiation revealed hypofluorescence of the tumor, indicating obstruction of the tumor vessels. Histopathologic examination of the tumor from the patient treated with photoradiation therapy and without(More)
BACKGROUND The oral tetracyclines, especially minocycline hydrochloride, are often used as an effective treatment for perioral dermatitis; however, they are sometimes difficult to use, especially in children, because of the side effects. OBJECTIVE The effectiveness of β-lactam antibiotics was evaluated in three cases of perioral dermatitis. METHODS(More)
Although a slight dilatation of the retinal capillaries is the only significant fluorescein angiographic finding in retinoblastoma when the tumor is less than 0.5 disk diameter in size, microaneurysms become distinct in the tumor after it attains a size of 1 disk diameter. As growth of the tumor progresses, blood vessels within the tumor become thicker and(More)