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Biomedical subjects

B Roger

Publications and source records attributed to B Roger.

78 records · Page 5Linked to original sources

[Radioisotopic demonstration of seasonal variations in food transfer between worker bees].

Food exchanges have been studied during the whole year between workers of unknown age and 4-days old workers. Variations exist between both groups. The mean percentage of shared food is 27% in the group of honeybees of unknown age and 40% in the group of 4-days old workers with respect to the initial intake of the giver. The effect of the season appears among workers of unknown age particularly.

Age Factors↗

[Treatment of acute pyogenic arthritis of large joints of the limbs. Apropos of 79 cases].

In reference to 79 cases of primary acute pyogenic arthritis involving large joints of the extremities, the authors analyze respectively the results of medical and surgical treatments. After tapping, the medical treatment combining antibiotics and cast immobilisation, has enabled recovery in more than one out of two cases with "restitutio ad integrum" of the joint. In the absence of rapid improvement, an arthrotomy, performed in 23 instances, has enabled, with irrigation and drainage of the joint, to control in a large number of cases, the infectious process. At the stage of purulent synovitis, a synovectomy was performed in 14 instances, at the price of a frequent decrease of the subsequent mobility. At the osteoarthritis stage, resection or arthrodesis were necessary (10 times) in order to obtain drying of the lesions. All things considered, 50 out of 79 joints recovered completely. We will stress the frequency of iatrogenic etiological factors (16 cases) and the immediate mortality (13 deaths). Finally, at the knee, arthroscopy (12 cases) enables to properly visualize the lesions and an effective irrigation-drainage, while decreasing immediate mortality and subsequent stiffening of the joint.

Acute Disease↗

[Comparison of different methods of medical images in the assessment of local extension of osteogenic sarcomas].

The authors compared different methods of medical visualisation (standard radiography, arteriography, quantitative isotope bone scan, telethermography, CT scan, visualisation by nuclear magnetic resonance) in 52 osteogenic sarcomas. In the majority of cases the diagnosis was suggested by standard X-rays at the first visit. CT scan and visualisation by nuclear magnetic resonance are the two basic examinations both in terms of assessing the future single block excision as well as deciding the approach to be used for biopsy. Telethermography and quantitative isotope bone scan usefully complement clinical examination and standard X-rays in following the course during chemotherapy. Arteriography is indicated only in the presence of large tumors threatening the vessels directly.

Adolescent↗

[Lymphography and fine needle puncture biopsy in the evaluation of lymph node involvement. Apropos of 207 cases].

Percutaneous fine needle puncture biopsy was performed on lymph nodes taking up contrast during lymphography in 207 patients with various disorders: urogenital (174 cases), gynecologic (13 cases), hematologic (17), others (3). At the present time, in fact, and simultaneously with the development of physical methods of diagnostic exploration (ultrasonography, computed tomography) needle puncture biopsy has become of increasing importance to confirm a suspected diagnosis. Needle puncture biopsy under television control is a simple, painless and practically nontraumatic procedure. When performed under precise conditions and a strict methodology (routine sampling as a function of the primary glandular chains), it establishes the correct diagnosis in a large number of lymphographies, enabling a rapid and more precise evaluation of the degree of extension and thus a better therapeutic choice.

Adult↗

[Intravenous urography after radiosurgical treatment of uterine cancer (stages T1 and T2). Normal transient features and urological complications (author's transl)].

The same radiosurgical treatment was given to 108 cases of stages T1 and T2 uterine cancers, and consisted of curietherapy followed by an extended colpohysterectomy with lymph node resection (Meigs operation) Intravenous urography was performed during operation in all patients, and at least one postoperative intravenous urography was also carried out. Stricture of the pelvic ureter was discovered postoperatively in 50.9% of cases, with or without subjacent stasis: this type of image is transient and disappears within eight months. A lymphocele can cause images showing signs of bladder pressure. Ureteral and vesical complications of a true and definitive nature are extremely rare.

Female↗