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Biomedical subjects

M C Riche

Publications and source records attributed to M C Riche.

At least 37 records · Page 2Linked to original sources
PubMed1987

Vascular malformations of the spinal cord: intrathecal perimedullary arteriovenous fistulas fed by medullary arteries.

We studied eleven patients with intrathecal extramedullary arteriovenous fistulas identified by selective angiography and myelography. The fistulas were located on the surface of the cord, fed by medullary arteries. Angiography distinguished three separate types that gave identical clinical disorders. Therapeutic results of surgery and embolization allowed specific indications to be defined for treatment of each type of fistula.

Adolescent↗
PubMed1987

[Capillary-venous angioma of the temporo-masseteric region].

Angioma of temporomasseteric region is a capillariovenous malformation in the temporomasseteric groove which can extend into adjacent facial zones. It forms a well defined clinicopathological entity. Clinically these angiomas present typical signs of a slow output capillariovenous angioma. Several patients were investigated by standard radiology, tomography and scan imaging, allowing detection of bony, particularly maxillary deformities, and by preoperative laboratory examinations. Treatment is by first stage embolization in situ of the angioma using sclerosing agents to reduce risk of perioperative bleeding and disseminated intravascular coagulation. The second surgical stage varies with the size and site of the lesion. Treatment should be carried out fairly early in childhood to avoid facial skeletal and muscular deformities. This hopefully allows harmonious growth of face with preservation of functions that risk alteration by the temporomasseteric angioma.

Adolescent↗
PubMed1986

[Hemorrhagic vascular complications of pelvic fractures . The role of embolization. 9 cases].

Emergency haemostatic embolization of the branches of the hypogastric artery was performed within 24 hours in 9 patients with fracture of the pelvis and major progressive retroperitoneal haematoma. Eight to 48 units of blood had been transfused. The patient in the worst condition (48 units of blood) died of respiratory failure and myocardial incompetence 2 hours after embolization. In the remaining 8 patients, embolization was effective without any immediate or delayed complication of the angiographic procedure. The usefulness of emergency angiographic exploration and the possible applications of endovascular haemostasis are discussed.

Adolescent↗
PubMed1986

Endovascular treatment of vertebral arteriovenous fistulas in twenty-two patients.

Twenty-two cases of vertebral arteriovenous fistulas treated by embolization are reported. Although such fistulas are usually asymptomatic they may be occasionally responsible for tinnitus. Neurologic complications are exceptional. Spontaneous fistulas have been found predominantly in the C1-C2 region (9 of 13 cases), while post-traumatic fistulas were located in the C5-C6 region and were often iatrogenic in origin (7 of 9 cases). In 17 cases embolization caused definitive closure of the fistula, while the vertebral artery remained patent. In three patients it was also necessary to close the vertebral artery in order to occlude the fistula. In two instances, endovascular management failed to obliterate the fistula. At present, endovascular treatment is the simplest and one of the least aggressive therapeutic approaches to vertebral arteriovenous fistulas.

Angioplasty, Balloon↗
PubMed1986

[Nonsurgical treatment of cystic lymphangioma].

Capillary lymphangiomas present of birth, and which have very little tendency to regress, must be distinguished from true cystic lymphangiomas developing after birth which are probably due to lymph blockade and are not true congenital malformations. This probably explains why the latter lesions regress either spontaneously or more rapidly after treatment with products such as Ethibloc. In the latter case, the efficacy of Ethibloc therapy appears to be equal to that of surgery without the formation of a scar and should therefore be tried initially before surgery.

Adolescent↗
PubMed1986

[Embolization of iatrogenic traumatic vascular lesions of the kidney. Apropos of 25 cases].

The authors present 25 cases of traumatic iatrogenic vascular lesions of the kidney, treated by embolization. Twenty two patients were seen for serious haemorrhagic complications: the embolization restored haemostasis in all cases. An early precocious relapse, due essentially to the use of reabsorbable embolization material, was seen in 4 patients, 2 of which were able to be reembolized, thereby definitely stopping the haemorrhage. No immediate complications were noted. 5 of the 12 patients follow-up, showed signs suggestive of infarction, strictly localized to the corresponding segmental territory embolized. The use of inflatable balloons facilitates the catheterization of segmental renal arteries and the endovascular treatment. Therapeutic angiography offers a simple, efficient, and remarkably conservative treatment of vascular iatrogenic trauma of the kidney. Angiography defines the number, site and type of vascular lesions ; the embolization assures the elective treatment.

Adolescent↗
PubMed1986

[Embolization of arteriovenous malformations using compression. Apropos of 11 cases].

External compression of both arterial feeder and venous return of an MAV allows embolization material to be stabilized into the area of the shunts. 11 patients were treated according to this method, either by an external compression method (4 cases) or by tourniquets (4 cases) or by a balloon compressing the vena cava (3 cases). The material of embolization was in all cases Isobutyl-2-Cyano-Acrylate. 5 patients were successfully operated after the procedure and 7 patients had considerable improvement after embolization, 2 of them being considered as cured.

Adolescent↗
PubMed1985

[Superficial cervicocerebral angiomas. Should complementary tests be required?].

A computer-assisted study of 772 patients with haemangiomas and vascular malformations was conducted during a 2-year period with special attention to complications and associated anomalies, such as laryngeal, meningeal or cerebral vascular malformations. We report here the data obtained from 397 of these patients totalling 401 superficial haemangiomas and vascular malformations of the head and neck. We classified the lesions into immature angiomas, growing and subsiding during childhood, and mature vascular malformations with a life-long development, themselves divided into arteriovenous, capillary and venous malformations. We found that each group had its own specific complications. Severe complications, notably vascular brain lesions, were eventually observed in patients with superficial arteriovenous malformations of the head. Extensive complementary investigations, including CT scans and arteriography, are therefore not justified in every case. Guidelines are offered to evaluate the risk according to the clinical diagnosis.

Brain Neoplasms↗
PubMed1985

[Diagnostic and therapeutic angiography in the evaluation and treatment of glomus jugulare tumors. Apropos of 32 cases].

This report is based on 32 cases of jugular paraganglioma treated by embolization, of which 7 had cervical and/or intrajugular extensions, five a giant extension involving mainly the carotid canal and one excretory activity. Aims and methods of diagnostic and therapeutic angiography are envisaged as well as results in the three angiographic types encountered: tumors vascularized by the external carotid artery only, those supplied by the internal (and external) carotid arteries and those fed by the vertebral artery or even the three arterial axes.

Angiography↗
PubMed1985

Facial port-wine stains and Sturge-Weber syndrome.

A retrospective study was made of 106 cases of facial port-wine stains. It was concluded that only patients with lesions located in the ophthalmic (or V1 trigeminal) cutaneous area are at risk for associated neuro-ocular symptoms. It is proposed that Sturge-Weber syndrome results from a dysmorphogenesis of cephalic neuroectoderm.

Adolescent↗