Biomedical subjects
Publications and source records attributed to F Colombo.
A group of 50 patients with total vagotomy plus pylorolasty are studied with pre and postoperative cholecystography in a four years follow-up. 50 patients with parietal cell vagotomy (selective vagotomy) served as control group. The AA. study the correlation of gallbladder dilatation with gallstones formation after total vagotomy. On the contrary parietal cell vagotomy prevents these dysfunctions.
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The proposed system is essentially based on the definition of a coordinate system, rigidly connected with the skull, by the introduction of three reference X-ray opaque points, secured into the bone of the skull. Target and reference points CT coordinates are given by the image display console. The three reference points are also identified on stereoradiographs, and their actual stereotactic coordinates are calculated by a geometrical approach which takes into account radiological distortion. A programmed computer links the target, identified on tomograms, to the three points system and calculates its stereotactic coordinates.
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The authors report their experiences in the surgical treatment of spastic syndromes by operations on the spinal cord and nerve roots. In the authors' neurosurgical department 20 lumbar myelotomies, 19 posterior selective lumbar rhizotomies, 2 complete posterior lumbar rhizotomies, 4 anterior lumbar rhizotomies and five posterior cervical rhizotomies were performed. Clinical results can be considered good on the whole. There was no mortality and no major complication in the entire series. The effect of selective posterior lumbar rhizotomy on the evolution of cerebropathic spastic paraparesis was particularly impressive. Six of 46 patients experienced a late recurrence of spasticity, but they all had good results after a further operation. The particular criteria for selection of each surgical procedure are discussed and related to the aetiology and clinical picture of the spastic syndrome.
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Blood pressure has been measured in a cohort of 2300 high school students of Milan (14-15 years old) for two years on end. The prevalence of "borderline hypertension" was 11.5% at the first examination and 8.5% at the second. The values of blood pressure were decreased, in every measurement, after a year from the initial screening especially in "borderline hypertensives". This study has confirmed that the "borderline hypertension" in subjects 14-15 aged is a transient phenomenon, but the incidence of "stable hypertension" as been found higher significantly in "borderline hypertensives" than normotensives. The results are discussed.
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A case of a broken clip demonstrated by radiography is presented. As angiography showed no filling of the aneurysm, further operation was not considered necessary. The cause of the fracturing of the clip remains unknown.
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The Authors present a case of licorice-sustained hypertension in a young man. blood and urine tests revealed: hypokaliemia with hyperkaliuria, suppressed plasmatic renin activity, absent urinary aldosterone. A symmetric left ventricular hypertrophy was detectable at the echocardiogram. Five months after the interruption of licorice ingestion the valves of systemic blood pressure were normal and the haematochemical investigations were also within normal limits. An echocardiogram revealed the disappearance of the signs of left ventricular hypertrophy and myocardial mass was reduced of about 40%. The usefulness of an echocardiographic examination, to evaluate hypertensive cardiomyopathy, is stressed.
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The left lung, surgically removed from a patient, was found to be bronchiectasic and polycystic. Using light microscopy it was possible to locate multiple tumorlets originating from the Kulchitsky cells of the bronchial and bronchiolar mucosae. With the traditional histochemical staining, argyrophilia and argentaffinity were demonstrated. The latter, not previously reported in the literature, suggests the presence of different monoamines in the neurosecretory cytoplasmic granules of the tumorlet cells.
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