PubMed Health⌕ Search

Biomedical subjects

F Potenzoni

Publications and source records attributed to F Potenzoni.

23 records · Page 2Linked to original sources
PubMedDate not supplied

[CT and MR compared in the study of hypophysis].

Normal CT and MR anatomy was studied in two series (53 and 25 cases respectively) of young volunteers of both sexes, asymptomatic and certainly without lesions of the pituitary gland. 115 other pathological cases (73 hyperprolactinemias, 8 acromegalies, 15 Cushing syndromes, 2 hyperthyroidisms, 17 nonsecreting adenomas) were examined using both CT and MRI. Both an accurate review of the relative literature and the results of our own series prove that MR is superior to CT in diagnosing pituitary microadenomas (3.2% not diagnosed with MRI and 25.8% not diagnosed with CT), in the follow-up of prolactinomas subjected to medical therapy and in the study of extrasellar involvement of pituitary adenomas, particularly with regard to the demonstration of compression of the optic chiasma.

Adenoma↗
PubMedDate not supplied

[Magnetic resonance in renal transplants].

The authors report their experience in the study of renal transplant recipients by MR, in order to determine its clinical potentials. The main purpose of this work is to focus on MR patterns in relation to clinical findings of rejected or normally functioning kidney. Twenty-four patients were examined with a 0.5 T superconductive magnet, body coil, spin-echo pulse sequence (SE) and inversion-recovery (IR). MRI patterns could be seen in normally functioning kidneys and transplant rejections, while variable MRI findings were observed in transplants with acute tubular necrosis (ATN). In the normally functioning transplanted kidney there is a clear corticomedullary differentiation (CMD), and the extent of vascular penetration into the renal parenchyma is clearly seen. In transplant rejection, CMD is either diminished or absent, and there is no vascular penetration into the parenchyma; to differentiate acute from chronic rejections, the increase/decrease in renal size and the change in renal shape (spherical shape in acute transplant rejection) respectively must be observed. MRI proves thus to be useful in the study of renal transplants, even in case of questionable clinical findings, and in patients in whom renal biopsy is contraindicated.

Adolescent↗
PubMedDate not supplied

[Percutaneous pancreato-gastrostomy in the treatment of pancreatic pseudocysts. Presentation of 2 cases].

The authors describe a new method for the treatment of pancreatic pseudocysts using a personal technique: the percutaneous pseudocystogastrostomy. Under US and fluoroscopy guidance at first a percutaneous drainage is introduced in the pseudocyst using a transgastric approach. For seven days the drainage catheter is flushed with antibiotic solution (Rifocin), then under fluoroscopy and endoscopy guidance doubled pig-tail catheter is placed with its curlend ends in the lumen of the stomach and pseudocyst respectively. After 60 days the double pig-tail catheter is removed endoscopically. Two patients with pancreatic pseudocysts were treated successful by this method. No complications or recurrences were observed.

Acute Disease↗
PubMedDate not supplied

[Percutaneous treatment of ureteral obstructions with an internal double-J prosthesis. Initial long-term results].

Percutaneous insertion of ureteral stents is a widely accepted method for ureteral obstructions treatment. From 1981 to february 1986, we introduced 78 endoprostheses in 60 patients. Fifty-six with malignant tumours and 4 with benign stenoses. In 48 of those 60 patients follow-up is complete. In the patients with malignant obstructions the mean time of survival was 198 days. Twelve patients were still alive in february 1986, with a mean time of survival over 300 days. In 12 patients (25%) the stent became obstructed in a mean time of 96.8 days. The placement of ureteral stents offers an alternative treatment to the palliative urologic surgery.

Adult↗