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Biomedical subjects

H Person

Publications and source records attributed to H Person.

31 records · Page 2Linked to original sources

The lateral spinal artery of the upper cervical spinal cord. Anatomy, normal variations, and angiographic aspects.

The lateral spinal artery corresponds to the most rostral extent of the posterolateral arterial axis of the spinal cord. It supplies the posterior and lateral aspects of the spinal cord, and courses anterior to the posterior roots of the upper cervical spinal nerves (C-1 to C-4), and posterior to the dentate ligament. The lateral spinal artery anastomoses rostrally with the branches of the posterior inferior cerebellar artery (PICA) at the restiform body and laterally with the extraspinal arteries at the emergence of each nerve. It may originate either from the vertebral artery or from the PICA lateral to the medulla. Certain variations will cause an unusual but normal enlargement of the vessel in a specific portion of its course; these variations include vertebral artery duplication, a C-1 or C-2 vertebral origin of the PICA, a C-1 or C-2 occipital origin of the PICA, and an intradural course of the vertebral artery at C-2. Knowledge of these variations in the arterial supply to the area allows for an understanding of the different anatomic peculiarities present and their angiographic importance.

Angiography↗

Delayed cerebral pseudo-tumoral radionecrosis following scalp-tumour irradiation. Case report and review of literature.

A case of delayed radionecrosis of the brain is reported, following irradiation of a scalp dermatofibrosarcoma. Signs and symptoms were those of an intracranial neoplasm and appeared 5 years after an irradiation dosage of 1890 rets. Twenty-seven similar cases were gathered from a survey of the literature. Surgical excision was the treatment of choice and led to cure or improvement in 20 cases. Analysis of doses and fractionation revealed excessive irradiation in all but one of the cases.

Adult↗

Anatomical bases of transaxillary resection of the first rib.

Anatomical study of the costoclavicular space, with approach via inferolateral axillary route, allowing resection of the first rib. With the patient in the semisupine position, lifting the arm to the zenith allows the costoclavicular space to be opened widely and separation of the plane of the first rib from the neurovascular structures of the lateral wall of the axillary pyramid. In the first part of our work, we study successively the bony frame and its anatomical variations, the muscular frame and its anomalies, the cervical pleura and its associated fibromembranous complex. The second part is a succinct summary of the different stages of transaxillary resection of the first rib, with mention of the operative risks and landmarks in this approach.

Axilla↗

[Anatomical basis for the surgical use of the cephalic vein (V. Cephalica). 74 anatomical dissections. 189 surgical dissections].

The delto-pectoral portion of V. Cephalica was dissected 189 times during surgery and 74 times on cadavers. In 8 out of 10 cases the disposition was of the classical type and the diameter was wide enough to allow catheterization with a 3,4 mm catheter. In 2 out of 10 cases the vein was absent or toothin. This anomaly was most often unilateral with a normal disposition on the other side in 2/3 of cases.

Arm↗

Spontaneous spinal epidural hematoma in a 22-month-old girl.

The authors report the case of a 22-month-old girl who developed cervical pain, neck stiffness, and quadriparesis over 12 days. An epidural hematoma was removed, with complete recovery after 6 months. There was no history of trauma. A search of the literature revealed eight previous cases of spontaneous spinal epidural hematomas in children under the age of 10 years.

Female↗

Persisting recessus infundibuli and empty sella. Case report.

In a patient with thrombosis of the central retinal artery, plain skull radiographs showed an enlarged sella turcica and computerized tomography revealed ventricular dilatation. Neuroradiological examination demonstrated stenosis of the Sylvian aqueduct and an unusual type of empty sella due to intrasellar persistence of the recessus infundibuli and the presence of an intrasellar arachnoidocele. The former anomaly has been reported in only three cases; in none of them was it associated with the latter abnormality.

Arachnoid↗

[The muscular atrioventricular septum].

On the left ventricle septal wall, the tricuspid valve ring attachment is displaced forward, towards the cardiac apex. To this trapezoïdal area between the two atrio-ventricular annuli, the medial wall of the right atrium is attached (laminar attachment), resulting in a atrio-ventricular septum which is: --membranous at its superior extremity (membranous atrio-ventricular septum well described in all classical anatomy textbooks); --and muscular at its inferior extremity. Located in the inferior anterior portion of the Koch triangle, the muscular atrio-ventricular septum is roughly triangular in shape. Its superior and anterior borders are well delineated and represented by: --the pars muscularis crest, at its junction with the membranous atrio-ventricular septum; --and the insertion of the tricuspid septal leaflet on this pars muscularis of the inter-ventricular septum. On the contrary, its third border, the posterior inferior left, is not well defined and varies greatly with the amount of fat filling the crux of the heart. The atrio-ventricular septum separates the right atrium from the base of the left ventricle outflow tract. It shares the important relationship of the "carrefour" of the four cardiac chambers (7 - 8) and first of all the conduction system and its vascular supply. The concept of an atrio-ventricular septum, both muscular and membranous, is to be kept in mind for the good understanding and the surgical correction of different types of "common atrio-ventricular canal" (2 - 10).

Heart Septum↗

[Disabling segmental occlusion of the vertebral artery. Surgical treatment using a venous by pass from the external carotid to the C1-C2 portion if the vertebral artery (2 cases) (author's transl)].

The authors report the cases of two patients who were severely disabled due to signs and symptoms of vertebrobasilar insufficiency caused by unilateral segmental occlusion of one vertebral artery. The patency of the occluded vertebral artery beyond C3 was demonstrated by a faint angiographic injection through anastomic ascending cervical arteries which provided insufficient blood supply. The opposite vertebral artery was abnormal in both cases: a proximal kinking with intracranial atheromatous stenosis in the first and an atheromatous ostial stenosis in the second one. A venous by pass from the external carotid artery (end to end anastomosis) to the C1-C2 portion of the vertebral artery (en to side anastomosis) was performed through an incision from the tip of the mastoid process along the S.C.M. the division of which was unnecessary. Post operatively the signs and symptoms disappeared immediately. The stability of this result is attested by a follow up period of 13 months in the first case and 9 months in the second one. A control angiogram demonstrated a good supply to the vertebro-basilar system through the bypass, the excellent permeability of which was further confirmed by repeated Doppler ultrasound examinations. The indication of this technique is discussed.

Aged↗