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Biomedical subjects

M Grosso

Publications and source records attributed to M Grosso.

At least 91 records · Page 5Linked to original sources
PubMed1989

Percutaneous treatment (including pseudocystogastrostomy) of 74 pancreatic pseudocysts.

Percutaneous treatment of 74 pancreatic pseudocysts was performed in 70 patients. Initially, single-step fine-needle aspiration was used and had a 71% (15 of 21 patients) recurrence rate. Better results were obtained with prolonged extragastric or transgastric external drainage, performed in 43 patients (46 pseudocysts). Two patients in this series (4.7%) required urgent surgery: one for gastric wall hematoma and the other for intracystic hemorrhage. Three patients (7.0%) were lost to follow-up. The recurrence rate in the remaining 38 patients (41 pseudocysts) was 23.7% (nine of 38 patients). Since 1986, seven patients have been treated with percutaneous pseudocystogastrostomy (one also underwent external drainage and is thus included in the previous series, too) after placement of a transgastric drainage catheter, with no recurrence (follow-up, 2-26 months). It is concluded that transgastric drainage should be performed whenever the anatomic situation is favorable and that a pseudocystogastric stent should be placed in these patients whenever secretions are still abundant after 7-10 days.

Drainage↗
PubMed1988

[Percutaneous biopsy (PB) of solid thoraco-abdominal formations with instrumental guidance. The authors' experience].

The results are reported of 283 percutaneous biopsies performed on solid thoracic and abdominal masses. Indications to biopsy are examined at first, which are relatively limited in number if compared to other authors' opinion on the subject--i.e., when the tumor cannot be characterized with any other methodology, or in case of neoplasms whose histological type is to be known in order to plan therapy. The techniques employed are then evaluated, with a special emphasis on the needle caliber and the guidance method (US, radioscopy and CT). Correct samplings have been obtained in more than 90% of cases. Minor complications were observed in less than 10% of cases, while major complications were totally absent. In conclusion, percutaneous biopsy proves useful in those cases where exam indication is respected and an accurate selection is previously performed.

Abdomen↗
PubMed1987

Metastatic atypical fibroxanthoma of skin.

Metastases from an atypical fibroxanthoma of skin have been reported but are very few in the literature. We had a personal case which, originally localized on the nostril, gave metastases to the cervical regional lymph node with no local recurrence. We examined both the primary and metastatic tumor by conventional histological stains and by immunoperoxidase technique to localize lysozyme, alpha-1-antitrypsin, ferritin and factor VIII antigens. The results show a clear correspondence between the primary and metastatic tumor.

Aged↗
PubMed1986

Fibrohistiocytic tumors of soft tissues. An immunohistochemical study of 183 cases.

183 cases of soft tissue tumors were studied utilizing the immunoperoxidase technique to demonstrate alpha-1-antitrypsin, ferritin and lysozyme. The series comprises 50 malignant lesions, 34 intermediate malignancy lesions, 99 benign lesions of fibrohistiocytic origin, and 23 malignant tumors of non fibrohistiocytic origin. The actual results of the study are as follows: alpha-1-antitrypsin, ferritin and lysozyme were always absent in 10 fibrosarcomas, 2 liposarcomas, 2 Ewing sarcomas, 3 synovial sarcomas, 4 neurofibrosarcomas, and 2 rhabdomyosarcomas, but in 24 malignant fibrous histiocytomas, 34 cases of dermatofibrosarcoma protuberans and 102 benign fibrohistiocytic lesions, these activities were present in a percentage that ranged between 12% and 38% (average 25%). Differences in the frequency of positive reactions did not occur between benign and malignant fibrohistiocytic lesions. The immunohistological examinations carried out have, therefore, only a very limited value for the practical diagnostic evaluation, but, when positive, are important to clarify the histogenesis of the tumor.

Ferritins↗
PubMed1986

[Training in digestive endoscopy. Considerations, experiences and methodological contributions].

The bibliographical contributions on education in digestive endoscopy and the need of establishing in Argentina a curricular programming for its teaching-learning are considered. The experience of the authors acquired during the giving of eight Basic or initiation Courses and eight Advanced or Improvement Courses is presented. They used in them six didactic simulators and endoscopic cinematography that completed the written simulations. Conceptual and methodological aspects are exposed to perform the curricular programming of training comprising the student from the student of Medicine to the gastroenterologist or surgeon more devoted or specialist in digestive endoscopy.

Argentina↗
PubMed1984

[Pancreatic needle biopsy guided by ultrasound or CT].

24 patients suspected to have a pancreatic expansive lesion underwent a biopsy with Chiba needle: 15 biopsies were guided by US and 9 by CT. Such series regards lesions having a diameter between 2.5 and 5.5 cm with average values of 4 cm. The results showed high specificity (100%) and satisfactory accuracy (66.6%); complications never set in. The authors prove the clinical utility of this procedure instead of the laparotomy and stress the importance of a strict collaboration between radiologist and cytologist in order to achieve the best results.

Adenocarcinoma↗
PubMed1983

[Proposal of an echotomographic method of guided portal catheterization].

To identify the frontal plane on which to find the right branch of the portal vein in 33 patients who underwent transhepatic percutaneous portography, we used a real-time ultrasonic scanner improved with an original device conceived for this specific need. The suggested method reduced the number of the ineffectual punctures of the liver, allowing in nearly all cases the cannulation of the right branch on the first attempts.

Adult↗