Biomedical subjects
G Lanchou
Publications and source records attributed to G Lanchou.
[Dimensions of the aortic ring. Anatomic and surgical study of 2 series of patients].
Both surgical (236 aortic valve replacements) and anatomical (62 dissections) studies have defined the aortic annulus diameter. Measurements (23.5 mm for women; 26 mm for men) are more considerable than established values. Furthermore, surgical study allows the authors to compare these results to several variables, more especially corporeal surface and stature: the height's increase perhaps explains the large sizes discovered.
[Agenesis of the left pericardium. Apropos of 3 anatomo-surgical observations].
After a short review of the history and the frequency of this malformation, the authors report three cases of pericardial defect: two cases of partial defect, and a case of complete absence (these three patients have been operated); these observations allow the authors to insist on the difference between the complete absence (often very well tolerated) and the partial defect, which exposes to left atrial appendage's incarceration (and sometimes sudden death). The classification based on the extension of the lesions is then considered, and the usual aspect of each type is described. The embryologic findings can explain the higher frequency of left pericardial defects.
[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.
[Deep femoral artery. Anatomoradiological study].
After a double study (anatomical--50 dissections--and radiological--100 arteriograms) the following points can be stressed: the femoral tripod is only found in 38 per cent of the cases. One or several nutrient arteries of the thigh originate often separately (62% of cases). Their origine is situated highup in a number of cases (at 3 cm below the inguinal ligament). The collateral network develops from each of the arteries forming a complete "profunda femoris system". Two surgical consequences deserve to be underlined: 1. The approach to all the branches is possible by a transverse incision in the fold of the groin. 2. Surgical revascularisation must concern the whole of the "profunda femoris" network.
[The gastroduodenal artery and its variations. Study of 100 arteriographies].
The gastro-duodenal artery, whose study has been based on a series of one hundred digestive arteriographies, is visualized in all cases. Its variations of origine are directly connected to the different possible dispositions of the hepatic arterial supply. The analysis of the results confirms the literary data: each time there is a middle hepatic artery, it gives the gastro-duodenal artery.
[Anatomical study of double urethra in the child. 2 cases].
The supernumerary urethrae can be defined as supplementary channels of muscular structure, whose mucous lining is of the excretory urinary type. The present classification enables us to define three main types of supernumerary urethrae: the duplicated, the bifidated, the blind ducts with external or internal opening. It appears rather difficult to link the sum of these malformations with a common embryological anomaly. The origin of the bifidated may be explained by an anomaly of the closing of the urogenital gutter. On the other hand, a prolongation of the process of separation of the urorectal septum would be at the origin of the duplicated urethrae.
[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.
[Radio-anatomy of uterine malformations].
33 cases of uterine anomalies were studied from the external morphological point of views as well as by hysterography. These cases were grouped according to R. Mussel's classification (1964) which is itself the synthesis of radiological and anatomical investigations.
[Right sub-clavian artery abnormality. Anatomic-radiologic confrontation].
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[The suspensory muscle of the duodenum and rotation of the intestinal loop].
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[A case of cyclopia in a sibling group presenting additionally several median malformations of the face].
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