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Biomedical subjects

A Pelizza

Publications and source records attributed to A Pelizza.

44 records · Page 3Linked to original sources
PubMedDate not supplied

Sonographic patterns of Caroli's disease: report of 5 new cases.

We have reviewed 5 cases of Caroli's disease, studied from 1982 to 1987, in order to define the validity of its sonographic signs. The "intraluminal portal vein" sign, found in all the cases, is emphasized. This sign may be easily identified and it is never encountered in other diseases. Recessive polycystic kidney disease was present in 3 cases, and congenital hepatic fibrosis was demonstrated in the 2 cases studied by liver biopsy.

Bile Duct Diseases↗
PubMedDate not supplied

[Current role of CT in pediatric ophthalmology].

In spite of the recent and substantial improvements in MR technique, some problems still exist relative to its applications in routine clinical exams in pediatric ophthalmology. The main problems are: inadequate MR equipment, long examination time, and MR inability to demonstrate intraocular calcifications. Ocular and orbital ultrasound (US) studies are highly operator-dependent, and US utility has been especially described in evaluating ocular, but not orbital, lesions. In order to verify the actual role of CT in pediatric ophthalmology, the CT scans of 58 children with ophthalmologic pathologies, performed over a 2-year period, were reviewed and compared with definitive diagnoses. Seven separate CT findings for each pathologic condition were independently analyzed and correlated with histology. In agreement with other CT series, optic nerve gliomas were invariably intraconal, whereas histiocytosis-X, Ewing's sarcoma, olfactory neuroblastoma (esthesioneuroblastoma), metastatic neuroblastoma and nephroblastoma were extra-conal. Rhabdomyosarcoma, principally extraconal, frequently involved the intraconal and preseptal spaces, with permeative destruction of the osseous orbit and frequent intra/extracranial spread. Orbital spread was mainly observed in vascular tumors. CT showed great accuracy in evaluating punctuate calcifications in retinoblastomas and in metastatic neuroblastomas, and bone fragments within a zone of destruction in histiocytosis-X. Various characteristics of CT attenuation values were observed in pathologic tissues, and high attenuation and marked contrast enhancement were particularly observed in metastatic neuroblastomas and rhabdomyosarcomas. In congenital orbital abnormalities and inflammatory diseases, CT readily detected ocular malformations (microphthalmos and colobomata).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMedDate not supplied

Vascular rings and slings. Diagnosis and surgical treatment of 49 patients.

Forty-nine infants with symptomatic vascular rings and slings, ranging in age from 20 days to 12 months, required surgical intervention between 1973 and 1984. The following anomalies were present in our patients: double aortic arch with left descending aorta (14), double aortic arch with right descending aorta (6), anomalous innominate artery (13), right aortic arch with aberrant left subclavian artery (4), left aortic arch with aberrant right subclavian artery (10), aberrant left pulmonary artery (pulmonary sling) (2). All the babies had symptoms related to compression of the trachea and/or esophagus. Four patients required temporary tracheostomy in the early postoperative period; 1 patient, affected by a pulmonary sling, required tracheal resection and anastomosis, for severe tracheomalacia. There was one hospital death in a patient with severe tracheal compression from an anomalous innominate artery and brain damage as a result of metabolic problems. Forty-eight patients survived and follow-up ranged from 3 months to 11 years. For each type of vascular anomaly encountered, and based on personal experience, we have outlined a diagnostic scheme allowing an accurate morphological definition and a subsequent surgical procedure.

Aorta, Thoracic↗