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Biomedical subjects

S Ogi

Publications and source records attributed to S Ogi.

5 recordsLinked to original sources
PubMed1994

[Diagnosis of incompetent perforators in primary varicose veins by high resolution ultrasonography].

The purpose of this study is to investigate morphological changes of incompetent perforators in primary varicose vein, and to elucidate diagnostic accuracy of high resolution ultrasonography regarding the incompetent perforators. The subjects were 42 lower limbs in 28 patients. Sixteen lower limbs had stasis symptoms and 26 had stasis dermal findings. Perforators were diagnosed when they penetrated the strong echo from the fascia. Their diameter was measured and their subfascial draining veins were identified. By operation, their penetrating portions on the fascia were confirmed and bleed back test was performed. They were divided into 8 types according to their draining veins. Eighty-nine perforators were detected and of them were major 3 types. The incompetent perforators arose at 3mm in diameter, and the all perforators more than 7mm became incompetent. The diagnostic accuracy of ultrasonography regarding their positions was 92%. However, the diagnostic accuracy of ultrasonography regarding their incompetency was 65% in total accuracy, when 4mm in diameter was used as a cut-off line. The positions of perforators were accurately detected using ultrasonography, but their competency was not precisely evaluated by diameter measurement. Therefore, this method was available for marking the precise position of incompetent perforators preoperatively.

Female↗
PubMed1993

A solitary renal mass as the only manifest lesion of a B-cell lymphoma.

A patient with a solitary renal mass as the only manifest lesion of B-cell lymphoma was reported. The surgical specimen revealed that the lesion was histologically limited to the renal parenchyma. Liver dysfunction prevented him from receiving systemic chemotherapy. Mediastinal and mesenteric lymph node involvements developed 6 months later. Fortunately, the patient survived without recurrence for 18 months after the surgical removal of these tumors and intensive chemotherapy. Systemic chemotherapy is recommended on patients with renal lymphoma even if the tumor seems to be limited to the organ.

Humans↗
PubMed1990

[Diagnosis of deep vein thrombosis by high resolution ultrasonography].

Using high resolution ultrasonography (US), diagnostic accuracy of thrombi in each venous segment of lower limbs and qualitative evaluation of thrombi in deep vein thrombosis (DVT) were investigated. The subjects were 106 lower limbs in 81 patients. The thrombi in common femoral vein (CFV), were diagnosed by compression technique and, were qualitatively analysed by echogenicity and consistency. Venography was performed in 18 limbs and histologic tests of thrombi were made in 6 limbs. The total accuracy of US was 100% for diagnosis of DVT, but was 83% for diagnosis of its extent. The total accuracy of US in each segment was greater than 90%, but the sensitivity of iliac veins was less than 90%. The thrombi in CFV were divided into 3 types and 8 sub-types. Type A was homogenous, type B was heterogenous, and type C was contracted echo. The types of us were consistent with results of histologic tests. We concluded that high resolution US is available for screening test for diagnosis of DVT and that qualitative evaluation of thrombi by US is a useful clinical test for selection of more adequate treatments.

Adolescent↗