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Biomedical subjects

J M Duval

Publications and source records attributed to J M Duval.

At least 37 records · Page 2Linked to original sources
PubMed1984

Anatomical relationship between the medial head of the gastrocnemius and the occurrence of a dystrophic bony lacuna.

A bony lesion with identical radiological features was seen in the medial part of the distal femoral metaphysis in five patients who practised cross-country motorcycling. These findings suggested that the cause of the lesions was of muscular origin. The nature and physiopathogenesis of the lesions were studied by roentgenography, computerized tomography and analysis of anatomical specimens. The results of these procedures were compared to observations made peroperatively. The lesion was identified as a specific, dystrophic bony lacuna resulting from the action of the medial head of the gastrocnemius (caput mediale m. gastrocnemii). In certain conditions this powerful biarticular muscle induces multiple microtrauma via traction on the structures of its tendinous insertion, especially the underlying bone, thus leading to bony avulsion. It is shown in this study that the bone-tendon-muscle complex forms a veritable biomechanical unit.

Adult↗
PubMed1983

[Epidermoid cyst of the spleen in children. Apropos of 2 cases].

Two cases of epidermoid cyst of the spleen are reported. A splenectomy was necessary because the topography of the lesions was not consistent with a conservative procedure for this children fourteen and ten years old. The histological criteria and pathogenic hypotheses of this infrequent lesion are analysed. Ultrasonography and eventually computerized tomography bring the best findings concerning the topography and are useful for the surgical treatment. When it is possible, the partial conservation of the spleen is to be wished.

Adolescent↗
PubMed1982

[Anatomic and tomodensitometric study of the levator ani muscle in infants].

A double anatomic and computed tomographic study of the muscle levator ani has been performed in pediatric patients. In or study, we have used frozen anatomical specimens. The anatomic and computed tomographic sections have been made strictly comparable, every 3 millimeters. These actions provide the normal computed tomographic aspect of the muscle levator ani. This anatomic study may have a direct application in the evaluation of imperforate anus, which is often difficult to diagnose : it allows a more precise determination of the level of the terminal rectal pouch compared to the level of the levator ani.

Anal Canal↗
PubMed1980

[Hydramnios and fetal malformations. A consecutive series of 50 cases which were under observation in the maternity unit of C.H.U. of Rennes between 1971 and 1978 (author's transl)].

50 cases of hydramnios were found in 17,528 deliveries. This gives a percentage of 0.29. These 50 cases of hydramnios gave birth to 53 fetuses which showed one or more of the following abnormalities. 20 malformations of which 12 were of the central nervous system; 6 twins; 6 cases of Rhesus allo-immunisation; 1 case of chorio angioma; 4 unexplained intra-uterine deaths; and 27 infants that died later. No etiological cause for this hydramnios was found in 20 cases. There was no maternal pathology to be found. Often the obstetrical histories of these women are pathological. In 3 per cent of the cases there was a previous abortion and in 18 per cent it appeared that there was previous hydramnios. We discuss what measures should be taken in cases of hydramnios. In our opinion a woman who has had a pregnancy with hydramnios should have genetic counseilling. The combination of hydramnios with delayed intra-uterine growth suggests that fetal malformation is present.

Female↗
PubMed1980

[Ventricular branches of the circumflex artery of the heart].

Because of the great number of anatomic descriptions, and because of the variability of the nomenclature, the authors realized three studies: anatomical, radiological, and surgical studies of 198 hearts (150 dissections and 148 angiographies). There are 3 groups of collateral branches for the left ventricle: --The lateral branch (existing in 49 per cent of the cases), beginning after a short space with often an intra-myocardial segment, and running obliquely on the pulmonary surface of the left ventricle. --The lateral and inferior branch (existing in 38 per cent of the cases), situated just between the pulmonary and diaphragmatic surface of the ventricle, and perpendicular to the coronary sulcus. --The inferior or posterior branches (existing in 59 per cent of the cases), which are parallel to the inferior (or posterior) interventricular sulcus, on the diaphragmatic surface of the heart.

Coronary Angiography↗
PubMed1980

[Echographic exploration of the portal system. Echo-anatomy and symptomatology (author's transl)].

The authors describe the extra- and intra-hepatic echographic images of the portal system in the foetus and the adult on the basis of data from literature and their personal experience with angiographic comparisons and investigation of anatomical specimens. The knowledge gained by echography provides the means for a sure approach to systematisation of the liver and thus accurately identifies the site of focal processes (tumour, abscess, etc.) furnishes very useful information in a large number of pathological cases (foetal hypotrophy, portal hypertension, etc.), facilitates diagnostic and therapeutic instrumental exploration and will soon make it possible to carry out haemodynamic studies of the portal system through the addition of pulsed Doppler to the present echographs.

Adult↗
PubMed1980

[Late prenatal diagnosis of fetal growth retardation: the diagnosis of a case of trisomy 18 (author's transl)].

The authors were able to confirm when dealing with a case of severe intra-uterine growth retardation that they were dealing with a case of trisomy 18 when they suspected a positive sign of growth retardation and carried out a pre-natal diagnostic test at the 32nd week of the pregnancy. They point out that this new indication could avoid unnecessary Caesarean operations.

Adult↗
PubMed1978

[Abnormal fusion of 2 primitive trigeminal arteries: apropos of an anatomo-radiological case].

Agenesis of the internal carotid artery was discovered during emergency cerebral angiography carried out on a comatose 28 year old man. The left cerebral hemisphere was supplied from the controlateral carotid artery, via a large vessel running through the sphenoid bone, between the intracavernous portions of the internal carotid arteries. Postmortem examination showed that death resulted from massive haemorrhagic infarction of the cerebellum and brain stem. Absence of the cervical and petrosal portions of the left internal carotid artery was confirmed. The anastomotic vessel was found to run through the spongiosa below the dorsum sellae. The heart, major vessels and circle of Willis were otherwise normal. An intercarotid anastomosis of this type has been reported on three previous occasions, in none of which was there anatomical confirmation.

Adult↗
PubMed1976

[Calculation of the volume of the grafted kidney. Value of this measurement by echotomography in renal transplantation].

From a necropsy series of 14 kidneys, it is very easy to prove, that there is a quite good correlation between the theorical calculated volume of the kidney and its real volume. It is possible to compare the kidney to an ovoid, and to calculate its volume, knowing the 3 dimensions which are its length, its width, its depth. In this way, by echotomography it is possible to estimate these three parameters at the level of the transplanted and to calculate the volume and if, after two successive examinations of control, the kidney volume is found to be enlarged (over 20%) a reject phenomenon must be diagnozed.

Humans↗
PubMed1975

[Sinus of the cerebellar tentorium].

Post-mortem anatomical study on the "Tentorial sinus", in 23 skulls, using a retrograde veinous injection of a mixture of Rhodopas and lead tetroxide. Present in more than half the cases, this sinus actually constitutes a true sinus, principally draining the superior and inferior hemispheric veins of the cerebellum, traversing the posterior section of the tentorium cerebelli and opening into the lateral or straight sinus.

Cerebellum↗