PubMed Health⌕ Search

Biomedical subjects

L Paron

Publications and source records attributed to L Paron.

13 recordsLinked to original sources
PubMed2000

[Treatment of inguinal hernia. Case reports].

BACKGROUND: The aim of this study was to evaluate the extent to which inguinal hernia surgery has changed over the past few years. As confirmed by the bibliography, the authors draw attention to the fact that the use of more resistant and well tolerated heterologous graft materials has led to the rapid spread of "tension-free" techniques which have now replaced conventional methods with good long-term results. The development of these techniques has been flanked by the growing use of day hospitals, leading to a marked reduction in hospitalization costs. METHODS: The authors describe the series of hernia operations performed by a day hospital linked to a general surgery ward over the past six years. The series refers to the 1st division of general surgery at Ospedale Nuovo Martini in Turin and covers the period from January 1993 to July 1998 with a total of 1387 patients. RESULTS: Over this short period, the percentage of inguinal hernia operations in inpatients fell from 92.9 to 22.4% while those undergoing surgery in the day hospital rose from 7.1 to 77.6%. This was flanked by a move away from conventional plastic surgery (Bassini, Shouldice) in favour of Lichtenstein's technique which was used in over 76% of monolateral hernia and over 55% of bilateral cases. Local anesthesia induced by the surgeon was used in the majority of cases (98%). Mersilene prostheses were initially used but were soon replaced by prolene grafts, both of which were well tolerated in over 84% of cases. Short-term antibiotic prophylaxis was administered in all cases, whereas the use of postoperative painkillers was limited to minor analgesics. CONCLUSIONS: The surgical treatment of inguinal hernia has changed drastically over a relatively short period with regard to both operating techniques, as is shown by the widespread use of prostheses, and the indications for day hospital surgery which have gradually increased owing to the reliability and tolerability of hernia mesh and the use of local anesthesia.

Adolescent↗
PubMed1995

[Retroperitoneal leiomyosarcoma originating from the inferior vena cava. A case report].

After a brief review of the literature, the authors report a rare case primitive retroperitoneal leiomyosarcoma originating from the inferior vena cava. The tumor was diagnosed very early thanks to its early symptoms and signs (abdominal pain and palpability), which appeared when the tumor size was only 5 cm. Therefore it was possible a macroscopically radical surgical exeresis even if the anatomical situation was particularly delicate. The low grading and staging of the tumor allowed to express a positive prognosis in spite of the malignant nature of this sarcoma.

Abdominal Neoplasms↗
PubMed1994

[Laparoscopic cholecystectomy. Personal experience].

The authors present their experience (136 cases) in the treatment of cholelithiasis with coelioscopic cholecystecomy. After a comparison of this modern technique with the traditional laparotomic approach, they underline the several advantages of coelioscopy (short hospitalization and early return to patient's work, reduced post-operative abdominal pain, avoidance of laparocele, better aesthetic results). Then the authors describe the present treatment of combined cholecysto-choledochic lithiasis with the help fo ERCP (their hope is for further improvement in surgical instruments to allow a single laparoscopic solutions.

Adolescent↗
PubMed1994

[Gastric leiomyosarcoma. Three clinical cases in emergency].

The authors describe three cases of gastric leiomyosarcoma that required surgical treatment in emergency. Myogenic gastric tumors are extremely rare (1-3% of primitive gastric neoplasias) and little is known about their biological evolution, even if they seem to have scarce power of spreading and of local invasion. Echoendoscopy appears to be the best screening method for the evaluation of staging and DT (doubling time). In the authors' opinion, when neoplasms have a diameter less than 5 cm, subtotal or total gastrectomies don't offer better results in the follow-up than simple minimal excision of the gastric tumor.

Aged↗
PubMed1993

[Intestinal occlusion caused by internal hernia of the retrocaecal recess. Description of a case].

The authors describe an acute intestinal occlusion due to a rare case of strangulated intra-abdominal hernia of the retrocaecal peritoneal recess. They underline the rarity of this pathology which is often treated in emergency without any possibility of preoperative diagnosis. Therefore, in order to carry out surgical therapy with good results, a correct knowledge of the anatomical features of these hernias is necessary.

Acute Disease↗
PubMed1993

[Splenectomy versus splenic salvage. Our experience].

The authors describe their experience in the surgical treatment of splenic lesions, mostly traumatic. In recent years a resolutely conservative attitude has been turned to splenic salvage, thanks to late findings on its immunological and haematological functions. Against 59 splenectomies for III-V degree lesions, the authors report a case of splenic trauma (II degree) without surgical treatment, monitored with clinical, haematological and instrumental (echography) test.

Adolescent↗
PubMed1987

Acid phosphatase activity in pre- and post-spawning hake (Merluccius hubbsi).

1. The specific activity of muscle acid phosphatase (E.C. 3.1.3.1.) in pre- and post-spawning hake was investigated. 2. Specific activity values, 0.54 in pre-spawning hakes and 1.64 in post-spawning fish, have been obtained. 3. Using a histochemical test, acid phosphatase has been localized mainly in the connective tissue. The strongest reaction has been observed in post-spawning hake. 4. The increase of the lysosomal activity in the connective tissue may be related to the changes found in the muscle texture associated with spawning.

Acid Phosphatase↗
PubMedDate not supplied

Phenotypical characterization of lymphocyte recirculating subsets in patients undergoing splenectomy for trauma.

The spleen is a peripheral lymphatic organ where lymphocytes stop for long time during their circulation. We studied the peripheral blood lymphocyte subsets both in 30 subjects splenectomized for trauma and in 30 healthy, non splenectomized, subjects. The phenotypical characterization of lymphocyte subpopulations was performed employing monoclonal antibodies by direct immunofluorescence assays with single and double labelling. Comparing the results, we put in evidence, in splenectomized patients, an increase in all the lymphocyte subsets but one (L. G.L. Leu7+). The CD8+ population showed the major increase according with its large representation in the splenic tissue. Splenectomy induces a change in lymphocyte recirculating pool because of the loss of an important anatomical site of migration. This reduction of lymphocyte recirculating capacity can be related to a decreased efficiency in immunocompetence. In fact, many Authors showed that splenectomy is associated with several anomalies of both humoral and cellular immune response. In contrast with this, our group of splenectomized patients doesn't reveal a greater incidence of infections. We conclude that splenectomy realizes a new anatomical situation where the reduction of lymphocyte recirculating capacity can be related to a decreased statistical efficiency in immunocompetence.

Adolescent↗