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Biomedical subjects

P Vaysse

Publications and source records attributed to P Vaysse.

At least 19 recordsLinked to original sources
PubMed1992

[Gracilis muscle in man].

This study is based upon the dissection of 84 gracilis muscles in 42 cadavers. It allowed to emphasize the following features: 1-The proximal insertion of the muscle is a strong tendinous lamina arising from the anterior aspect of the pubis and from the ischio-pubic branch; the distal insertion to the tibia is common to both the gracilis and the semi-tendinous muscles. 2-The distal tendon of the gracilis is tightly connected to the posterior branch of the internal saphenous nerve which crosses the muscle behind the medial femoral condyle. 3-The arterial supply (52 dissections) appears to be very rich, consisting in various pedicles entering the muscle by is lateral side. The main neurovascular bundle is issued from the profound vessels of the thigh, coming either from the adductors artery (73%), either from the medial circumflex artery (19.2%), either from both networks (7.7%). The site of penetration of the vessels in the muscle is remarkably constant. The remaining pedicles (2 to 4, one of which is quite constant at the musculotendinous junction) arise from the muscular branches of the femoral artery. 4-There is a good correlation between the measured length of the muscle and the distance between the superior aspect of the pubic arch and the medial epicondyle. A 0.37 corrective factor applied to this latter distance allows to determine the exact sit of penetration of the main neurovascular bundle in the muscle.

Arteries↗
PubMed1991

Pyloric obstruction with complicated pancreatic heterotopia.

A case of pyloric obstruction associated with pancreatic heterotopia is described in an 18-day old child. The association of several pathologic processes like acute pancreatitis and abscess formation in the heterotopic mass and the long-term follow-up are the main points of interest in this report.

Choristoma↗
PubMed1990

[Non-palpable testes. Apropos of 161 cases].

A series of 161 boys with 178 impalpable testes is reviewed. Extended inguinal exploration was the main form of investigation and treatment. Hormone injections and studies were performed in bilateral cases. Sonography was unhelpful. Laparoscopy was not used. Impalpables testes account for 7% of all boys with an anomaly of testicular descent and 8.5% of operated boys. One hundred and twenty six testes were found, 58 in the abdomen, 68 in the inguinal canal. Thirty one nodular vestige were found and all 25 with histopathology were spermatic duct residue. In 21 boys no trace of testes or spermatic duct remnant were found. Ninety five testes were successfully brought to the scrotum with one (85) or two (10) stage procedure. Anomalies of the upper urinary tract in 13 of 21 cases without testes or spermatic duct remnant were very rare. In bilateral cases it looks better to search a testes whatever the biological responses to gonadotropin stimulation.

Abdomen↗
PubMed1990

[Management of a biliary cyst disclosed prenatally. Apropos of 2 cases].

Two cases of prenatal detection of congenital biliary cysts are reported. Prenatal and postnatal ultrasonography demonstrate a solitary sonolucent cystic lesion. The differential diagnosis in fetus and infant includes any abdominal cystic lesions: ovarian cyst, duplication cyst, cystic lymphangioma, choledochal cyst and other congenital cysts of the liver. In opposite to the difficulty of diagnosis, the choice for treatment is easy: surgery is the only way to allow histologic diagnosis and to avoid any relapse or complications.

Choledochal Cyst↗
PubMed1990

[Anatomic study of 2 sternopagus. Is the separation possible?].

Trough two cases of Sternopagus, study of classification of conjoined twins with precise definition of anatomic characteristic of Sternopagus. Description of our own subject and review of literature. At the end of this study, it is evident that the heart and vascular fusion is always complicated. So, the true Sternopagus are inseparable and no likely to live, in opposition with Xiphopagus and Thoracopagus.

Humans↗
PubMed1989

[Long-term evolution of esophago-gastric junctions surgically treated to correct gastro-esophageal reflux. 111 cases].

One hundred eleven patients underwent a surgical procedure for correction of intractable gastroesophageal reflux. Twenty children were severely mentally retarded. The range of follow up was 6 months to 15 years. Upper gastro-intestinal series was realised at tenth post-operative day for 111 children, then during the first year for 97 children, between the first and fifth year for 62 children and after the fifth year for 25 children. The first upper gastro-intestinal control (at tenth day) was normal for 111 patients. Next controls revealed, usually during the first post-operative year, an esophago-gastric junction anomaly for 49 patients (44%). Most of them are light (41/111 = 37%): occasional reflux (9 children; more frequent without pyloroplasty) of little paraesophageal hernia (32 children; more frequent with closure of esophageal hiatus by two suture lines, with esophageal fixation on median arcuatum ligament or without esophageal fixation on esophageal hiatus); these light anomalies are symptom free and sometimes transitories. Rarely, anomalies are important (8/111 = 7%): big paraesophageal hernia of recurrence (more frequent with partial posterior fundoplication and in children severely mentally retarded); five patients were symptomatic and had to be reoperated. Also now, we don't use partial posterior fundoplication and in mentally retarded children we prefer a Collis procedure.

Child↗
PubMed1988

[Value of magnetic resonance imaging in the follow-up of children operated for portal hypertension].

The authors report their experience concerning nuclear magnetic resonance imaging (NMR) in 7 children. They emphasize its importance in the post-operative study of portal hypertension. All those children got surgically created porto-systemic shunts. NMR imaging is easy, safe and trustable. It is able to visualise the shunt itself and to demonstrate the patency of this shunt. So, it is interesting when the usual controls have failed, particularly abdominal ultrasonography.

Adolescent↗
PubMed1988

[110 surgical arteriovenous fistulas in 89 children].

110 arteriovenous fistulas made for hemodialysis, chemotherapy and extended parenteral nutrition are studied. For authors, the side-end radial arteriovenous fistula is the main used, followed by the humero-basilic shunt. The immediately functional fistula's percentage was of 81% with a net progress in the last year since it is now at 92%. Thrombosis prevails in early complications. 32% of delayed complications are minutely studied. They include thrombosis, infections, trophic disturbance of hands, secondary stenosis, hyper-flow with cardiac consequences. Others more unusual delayed complications are described ("Stealing" syndrome, no venous distention, bleeding, pseudo-aneurysm). The authors advice the side-end arteriovenous fistula for hemodialysis and humero-basilic shunt with immediately basilic superficialization for infant's hemodialysis, for chemotherapy and parenteral nutrition.

Adolescent↗
PubMed1987

Cholinesterase activities in resected bowel specimens from children with Hirschsprung's disease.

We have measured acetylcholinesterase (AChE) and the butyrylcholinesterase (BChE) activities along strips of resected bowel specimens from thirteen children with Hirschsprung's disease. The AChE activity was variable along the length of the resected bowel, while the BChE activity remained constant. By contrast, the AChE/BChE ratio decreased rapidly to low levels when ganglion cells were present. We suggest that this ratio can be used to determine the normal segments of the bowel, to specify the anatomic forms (i.e. rectal or rectosigmoid) and may be useful in determining the anastomotic level.

Acetylcholinesterase↗
PubMed1987

The diagnostic value of acetylcholinesterase/butyrylcholinesterase ratio in Hirschsprung's disease.

Aganglionosis of large bowel (Hirschsprung's disease; HD) is associated with higher acetylcholinesterase activity (AChE activity). Occasionally, especially in the neonatal period, the AChE activity may not be of diagnostic value. The authors previously reported that simultaneous estimation of butyrylcholinesterase activity (BChE activity) and the determination of AChE/BChE ratio may have discriminatory diagnostic value. They extended this finding to 31 cases of HD, in 16 of which resected tissue was available for study. All cases had histologic confirmation of aganglionosis. The AChE/BChE ratio was found to be higher than 2.0, with the exception of a case in which the biopsy weight was low (i.e., less than 3 mg), even when the AChE activity was normal or borderline. The estimation of AChE/BChE ratio is easy, rapid, and, in the author's experience, of discriminatory diagnostic value.

Acetylcholinesterase↗
PubMed1987

[Ureteral triplication].

Two cases of ureteral triplication are reported, on in a child of 4 years the other in a 2-week-old baby. In both cases the triplication was associated with one or two ureteroceles. A literature review is used as a basis for describing the characteristics of this rare malformation.

Child, Preschool↗
PubMed1986

[Diagnostic value of cholinesterase activity in superficial biopsies of the rectum].

Quantitative assay of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) activities have been estimated in superficial rectal biopsies from 168 neonates or children suspected of having Hirschsprung's disease. The AChE activity made the diagnosis in 93% of the cases. The ratio AChE/BChE improved both the specificity and the sensitivity and confirmed the diagnosis on the first series of biopsies in 99% of the cases.

Acetylcholinesterase↗
PubMed1985

[Value of the assay of cholinesterase activity in superficial biopsies of the rectum in the diagnosis of Hirschsprung's disease].

Cholinesterase activity have been estimated in rectal biopsies of 19 children with Hirschsprung's disease and 80 normal children. A high level of acetyl-cholinesterase is a strong argument for the diagnosis of aganglionosis. However the ratio acetylcholinesterase over butyrylcholinesterase seems to be a better sign allowing a right diagnosis in 99% of the cases.

Biopsy↗
PubMed1985

[Esophageal stenosis with tracheo-bronchial heterotopy. Apropos of 3 cases].

Three cases of esophageal stenosis with tracheo-bronchial remnants within the wall of the esophagus, near the cardia, are reported: two girls and one boy; in three, this anomaly contains cartilage remnants. After various procedures, esophagoplasty was necessary when the boy of the first case was fourteen. Two girls was cured by a Thal procedure with follow-up of five and four years respectively. A survey of the references found 43 other cases. This anomaly is more frequent in girls. Tracheo-bronchial remnants are located usually in the esophagus near the cardia and contains cartilage. Rarely the respiratory inclusion is seen in the middle part of the esophagus and no cartilage is then identified. The stenotic segment is lined by squamous cell epithelium and the heterotopic tracheo-bronchial structures are intramural implants. The diagnosis should be suspected in cases of esophageal obstruction presenting in childhood or adult life with a history dating back to infancy or childhood. Radiologically a short stenotic non relaxing segment is the hallmark in the distal esophageal localisation. Resection of the stenotic segment with primary anastomosis is the method of choice in the middle part of the esophagus. That procedure is a good alternative in the distal esophagus.

Adolescent↗
PubMed1984

The ureterovesical junction.

The ureterovesical junction was studied by dissection and serial sections in 50 post mortem specimens. Three points are considered in this paper: the structure of the terminal ureter, the anatomical arrangement of the ureteral hiatus and the ureteral sheath. Study of the structure of the intramural segment of the ureter demonstrated on one hand, the perfect continuity of the terminal ureter with the trigone and on the other hand, the abundance of the fibroelastic connective fibers which like the muscle fibers run longitudinally. The compliance of the intravesical ureter is dependent on the balance between these two components. The modification of this balance can lead to the creation of a functional obstacle. The anatomical arrangement of the ureteral hiatus is described. The inner muscle layer of the detrusor extends almost to the ureteral orifice, the truly submucosal part of the ureter thus being very small. The constitution of the ureteral orifice and its relations to the ureter account for the different positions of juxtaureteral diverticula and transhiatal herniae of the bladder mucosa. The many descriptions of the ureteral sheath appearing in the literature are reviewed in light of the findings from the present study. The juxtavesical segment of the ureter is surrounded by a fibroconjunctive sheath which fixes the ureter to the bladder wall. The transparietal segment of the ureter is ensheathed in its adventitia, whereas a fibromuscular sheath cannot be truly individualized over this ureteral segment.

Adolescent↗
PubMed1984

[Hydrocephalus during central parenteral feeding. Role of vitamin A poisoning].

Five children receiving central parenteral nutrition presented between the 6th and 16th day of renutrition with hydrocephalus unrelated to intercurrent neurologic disorder. Repeated determinations of plasma retinol and of the transport complex components made the proof of vitamin A intoxication in 2 cases. Vitamin A had been provided in the form of a water-soluble vitamin-solution incorporated in the nutrition mixture (doses: 1,500 micrograms and 3,000 micrograms retinol equivalent respectively). These 2 case reports have to be compared with 3 other cases of hydrocephalus occurring during total parenteral nutrition. One child presented with bilateral jugular thrombosis secondary to percutaneous venous approach trials, while the 2 other were probably within the framework of an accelerated weight recovery following nutritional marasmus.

Female↗