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Biomedical subjects

V Pinna

Publications and source records attributed to V Pinna.

At least 19 recordsLinked to original sources
PubMed1998

Spontaneous healing of cerebral aneurysm at the beginning of left posterior inferior cerebellar artery (PICA). Case report.

We present the clinical and neuroradiological features of a ruptured aneurysm at the beginning of the left PICA suffering from subarachnoid hemorrhage (SAH). The young patient refused surgery, endovascular treatment and also follow-up. After 4 and 5 years she repeated the left vertebral angiography that showed a spontaneous thrombosis of the aneurysm. After 8 years MR angiogram images confirmed the total obliteration of the aneurysm.

Adult↗
PubMed1997

Haemangioma of the zygoma: case report.

Haemangioma of bone in the zygoma is extremely rare. We report two cases presenting with swelling of the zygomatic region. The literature is reviewed and CT, angiographic and MRI findings are discussed.

Adult↗
PubMed1991

Frontoethmoidal meningoencephalocele. A one-stage correction, reconstruction, and plating by means of the micro system.

This case report on one stage surgical treatment of meningoencephalocele offers the opportunity for a revision of the most recent trends expressed by other authors on this topic. Surgical technique involved a system of rigid fixations by means of microplates which, according to our experience in other cases, is particularly advisable in pediatric age. We find that the simultaneous utilization of calvarial bone grafts facilitates a better reconstruction of the cranial base, and also offers greater stability in results.

Bone Plates↗
PubMed1990

Radiotherapeutic treatment for breast cancer choroidal metastases.

A series of 14 eyes (11 patients) with choroidal metastases from breast cancer were reported. The lesions were classified into three grades according to the severity and extent of involvement. Eleven eyes (9 patients) were treated by radiotherapy with two opposed lateral fields using a 4 MeV linear accelerator. The contralateral eye received a prophylactic irradiation. An average dose of 42 Gy was delivered (range, 30-50). Results of radiotherapy were the following: 5 CR and 2 PR in grade II (9 eyes) and 2 PR in grade III (2 eyes). We conclude that radiotherapy is useful to control choroidal metastases of breast cancer. No contralateral metachronous involvement was found. Quality of life of responders showed a marked improvement. Radiation-induced injury was not seen.

Breast Neoplasms↗
PubMed1990

Tangier disease: central nervous system impairment in a case of syringomyelia-like syndrome.

A neuroradiological investigation of the central nervous system (CNS) in a case of Tangier disease presenting as a syringomyelia-like syndrome is reported. No syringomyelinic cavities were found. However, MRI showed cervical spinal cord atrophy and scattered foci of greater density with T2 weighted images in the white matter of the frontal, parietal and occipital lobes. Cerebral and cervical spinal cord involvement in the course of Tangier disease is now shown for the first time. The authors postulate that the MRI detected alterations are related to the underlying illness.

Brain↗
PubMed1988

Recovery from herpes simplex encephalitis: selective impairment of specific semantic categories with neuroradiological correlation.

The clinical, neuropsychological and neuroradiological features of two patients affected by herpes simplex virus type 1 (HSV-1) encephalitis are described. An experimental study for the assessment of naming, recognition and description displayed in one patient a persistent significant impairment in naming living things. The other patient showed a failing "semantic memory" for the same categories, although a significant impairment emerged only for plants. In both patients, the late neuroradiological sequelae were localised mainly in the inferior and middle gyri of the left temporal lobe and in the left-side insula. In one patient, the right-side insula was also involved. The selective cerebral damage induced by HSV-1 is stressed and a correlation between the neuroradiological and neuropsychological findings is attempted. The stereotyped anatomical and neuropsychological changes lead to the belief that the virus may recognise, within the limbic system, particular cellular "strains" on the basis of their molecular specificity.

Adult↗
PubMed1988

Computed tomography of epidural fibrosis after discectomy: a comparison between symptomatic and asymptomatic patients.

The evaluation of patients with symptoms recurrent after disc surgery is a difficult diagnostic problem. The most common causes are recurrent herniation and postoperative scarring; routine x-ray and myelographic differentiation between herniation and scarring is difficult or impossible. High resolution computed tomography (CT) has shown some results in the evaluation of postoperative patients, but the role of epidural fibrosis in failed back surgery syndrome (FBSS) is not clear. Some knowledge of the "normal" CT physiological healing and scarring after disc surgery is necessary. We scanned 20 asymptomatic operated patients and 20 patients with recurrent sciatic nerve pain after disc surgery who did not have bony stenosis, recurrent disc herniation, or other causes of FBSS. Our observations showed no important differences in the fibrosis demonstrated by CT between symptomatic and asymptomatic patients. The degree and type of fibrosis are not related to recurrent symptoms.

Adult↗
PubMed1986

Radiosurgery using a 4MV linear accelerator. Technique and radiobiologic implications.

In the authors' technique, the stereotactically localized target is fixed to the isocenter of a 4 MV linear accelerator. The irradiation is carried out along 9-17 non-coplanar arcs distributed on a 160 degrees cylindrical sector. High doses (10-50 Gy) are delivered in one or two sessions. From 1982, 65 patients have been treated (shortest follow-up 6 months). The dose was chosen according to the pathology and to the volume of the lesion. Good clinical results have been obtained in low-grade gliomas, acoustic neuromas, arteriovenous malformations, and other selected types of intracranial lesions. Therapeutic effects in terms of clinical condition and size of the lesions have been plotted in relation to time elapsed and dose employed.

Adolescent↗
PubMed1983

[A combined method of sialography and CT scan of the parotid gland].

Computed tomography (CT) of parotid gland was performed on 40 patients, immediately following sialography. The results of the combined CT-sialography were compared with those of sialography alone and are presented here. We have come to the conclusion that the main indication for this method, in the study of the parotid gland, is the mass-pathology, particularly situated in deep-lobe and in the pharyngo-maxillary space.

Adenoma, Pleomorphic↗
PubMed1982

Changes of cerebral density in dialyzed patients.

CT studies were made on 38 patients receiving different dialytic treatment, 10 patients with chronic renal failure not yet dialyzed, and 15 healthy subjects. No morphological modifications were observed. On the contrary, significant changes of density were demonstrated after a dialysis session in the population treated intermittently. In these patients the density values were similar to those registered in the controls 1-6 h after a dialysis session. End stage renal failure and CAPD patients always had normal density values. Therefore cerebral density changes are caused only by the intermittent dialytic treatment.

Absorptiometry, Photon↗
PubMed1982

Studies on brain density in hemodialysis and peritoneal dialysis.

30 patients on hemodialysis or peritoneal dialysis have been investigated by computerized tomographic (CT) scan. To evaluate possible cerebral alterations induced by dialysis, CT examinations were carried out before, immediately after and 6 h after the end of dialysis with an Evaluskop, which provides an objective precise evaluation of even slight variations in brain density. No morphological variations were noted after dialysis, while the brain density fell significantly during and after the treatment. A decrease in density was not observed in normal subjects or in patients on continuous peritoneal dialysis. The changes in the densitometric values of brain tissue suggest that there is a postdialysis gain in cerebral water linked to the intermittent treatment. CT may represent a simple reliable method for studying uremic encephalopathy and investigating the pathogenesis of the dialysis disequilibrium syndrome.

Adolescent↗
PubMed1981

A new method for utilizing CT data in stereotactic surgery: measurement and transformation technique.

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.

Humans↗