Biomedical subjects
Publications and source records attributed to J Sokołowski.
Two cases are presented of bifocal, synchronous colonic cancers. In both patients resection of the large bowel was done achieving good final result. The necessity is stressed of careful diagnosis ruling out the presence of multifocal neoplastic lesions in patients with suspected large bowel cancer.
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The nucleus retroambiguus is connected to the ambiguus rostrally to the crossing pyramidal fibers and laterally to the crossing lemnisces. The lateral reticular nucleus is positioned laterally and ventrally to the neurons of the connection. The neurons belonging to the connection are medium-sized. Their long dendrites are directed mainly medially, dorsally and ventrally. Medially directed dendrites ascend into the central nucleus of the medulla oblongata. Fibers of the lateral vestibulobulbospinal tract pass through the area of the connection. The tracts of the corticobulbar and medial reticular formations are found in the vicinity of the neuronal group described above. It is not impossible, however, that other, as yet unknown, tracts also pass in the neighbourhood.
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In 18 cats of different ages the topography of dendrites of the retroambiguus nucleus was established with Golgi impregnation method. The large and medium neurons of the nucleus send their longest dendrites mainly into dorsomedial and ventrolateral directions. The former dendrites enter the nervous tract area such as pyramidal, medial vestibulo-bulbo-spinal, ponto-bulbo-spinal and tecto-bulbo-spinal. The ventrolaterally directed dendrites reach the area in which pass lateral vestibulo-bulbo-spinal tract and fibers of the lateral reticular system. The dendrites always project outside of the center (nucleus). Thus, the term center should comprise not only perikaryons but also the area of dendritic tree which receives most of the afferent fibers. It is suggested to introduce two terms, viz., the "input area" which is formed by dendritic tree of the neurons belonging to the nucleus in the section and the "input space" as the dendritic tree considered in the three dimensions.
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Witkin 1980-1988, 42 patients (4 males and 38 females) were operated for the gall-bladder cancer; it makes 2.9% of the patients who underwent cholecystectomies. Average age of female patients was 65 and males--71 years. No typical complaints were revealed making possible an early diagnosing of the gall-bladder cancer. The far advanced stages of this cancer were found in 41 cases. In i case no macroscopic features of the cancer were found. Cancer was diagnosed by means of histopathological examination. One patient (woman) survived more than 3 years after operation; 3 women survived more than 1 year. Average survival is 4 months.
Nineteen patients with suprarenal tumours were treated surgically within 9 years. Suprarenal cortex carcinoma was diagnosed in 4 of them. One patient was operated twice within 18 months: first the tumour from the right suprarenal gland was removed, then--from the left. Four out of 5 removed tumours were quite sizeable; only in one patient tumour was less than 5 cm in diameter. For diagnostic purposes urography, arteriography, computer tomography and USG were used. Because the characteristic symptoms of the diagnose were absent. Patients reported for the treatment when the disease was markedly advanced. This study stresses the necessity of operative treatment despite discouraging results of diagnostic examinations.
The fusion strength was compared of the main metal alloys (Wiron 88, Wironit, Spal, Super Fluid) to the enamel by means of the ABC cement (Vivadent) and the preparation Evicrol (Spofa Dental). The obtained samples of metal alloys were subjected to abrasive blasting processing, defatted, and covered with the preparation "metal primer" from the ABC set, and fused to the pickled enamel with ABC cement and Evicrol preparation. The strength of the fusion was tested with the Instrom testing device. The fusion strength was greater in the case of Evicrol.
One of the methods of "adhesive" preparation of the surface of the retention elements of AET bars and brides before their binding to enamel is electrochemical etching. The purpose of the method was creation on alloy surface of appropriate microretention for the fixing resin. The aim of the study was determination of the optimal conditions for etching of alloys (Wiron 88 and Wironit) as binding elements of AET constructions, and for checking the binding force of the Microjoin resin cement. The following etching conditions were accepted as optimal: for the Wiron 88 alloy (10 min, 2,7 V, 200 mA/cm2), for the Wironit alloy (12 min, 2,7V, 270 mA/cm2). The binding force of the alloys etched under optimal conditions to the enamel achieved with the Microjoin (Sci-Pharm-Madental) resin cement was measured also, using the Instron testing device. The movement velocity was 2 mm/min. The following strength of binding of etched alloys to enamel was measured: 195.7 kG/cm2 for the Wiron 88 alloy, and 128.6 kG/cm2 for the Wironit alloy.