Thyreocervical Trunk Research Articles

Intravascular Treatment of Left Subclavian Artery Aneurysm Coexisting with Aortic Coarctation in an Adult Patient.

Coexistence of aortic coarctation with aneurysm of subclavian artery is a uncommon situation and may require unusual treatment in patients.A 40-year-old patient diagnosed incidentally with left subclavian artery aneurysm coexisting with aortic coarctation. Patient was initially referred for hybrid treatment. Initially ostium of the left subclavian artery was covered with a stent-graft. Over a 30-month follow-up period aneurysm became thrombosed all the way up to the ostium of internal mammary artery. The patient did not present with neurological symptoms or signs of upper limb ischemia. Taking into consideration good blood supply to the axillary artery via reversed blood flow in the thyreocervical trunk, hence we decided not to proceed with cervicoaxillary bypass grafting.Implantation stent-graft into aorta coarctation with covering axillary artery is proper way of treatment and may need no other surgical procedures.

Respiratory Arrest Due to Hematoma Caused by Thyreocervical Trunk Branch Laceration and Confluence of Sinuses Perforation

Central venous catheterization plays an important role in the treatment of emergency patients who require renal replacement therapy. Emergency patients with end-stage renal disease are at high risk for development of complications because of coagulation disorders, tissue, and organ changes due to uremia, anatomic variations, and obstruction of the large central veins. Complications associated with catheter placement can be mechanical, infectious, and thrombotic, and may occur during or following insertion of central venous catheterization which is a life-saving procedure for patients. We report a case of respiratory arrest in a 76-year-old woman suffering from end-stage renal disease for 14 years, because of large soft tissue subcutaneous hematoma in the right upper thoracic outlet. The rapid development of hematoma was a consequence of arterial bleeding from the branch of the thyreocervical trunk. Laceration of the thyreocervical trunk branch during central venous catheterization is a rare complication. Later diagnostic images revealed catheter perforation of confluence of sinuses which also complicated this case. We briefly discuss signs, symptoms, and management of the patient. Although arterial puncture of the carotid artery during the Seldinger technique is well-known life-threatening complication which can be recognized by light red pulsatile blood during aspiration, smaller arteries such as the thyreocervical trunk branch can be punctured during the procedure and lead to serious complications.

Symptomatic arteriovenous fistula of the thyrocervical trunk. A rare complication following subclavian vein catheterization

After the incidental puncture of a sidebranch of the thyreocervical trunk during a subclavian vein catheterization, a symptomatic avfistula developed. The diagnosis was confirmed by angiography. Using a microcatheter system the fistula was occluded with micro-coils.

Vascularização arterial da porção torácica do timo em suínos

Estudaram-se, em 30 fetos e recém-natos de suínos sem raça definida, mediante injeção de solução de Neoprene Látex 450 corado e posterior dissecação, a origem, o número e a ordenação dos vasos tímicos. A porção torácica do timo mostrou-se irrigada por ramos diretos e indiretos oriundos do tronco braquiocefálico, das aa. subclávias, torácicas internas, cervicais superficiais e do tronco tireocervical. Independentemente da origem e tipo, o número total de colaterais variou de 2 a 9, com maior freqüência de 3.

Variationen des Truncus thyreocervicalis

Variations in the vascular system are much more numerous than in other anatomical structures. The knowledge of these variations is essential for radiologists and surgeons in the interpretation of angiograms. A complex variation of the thyreocervical trunk is presented in this paper: The Aa. thoracica interna and cervicalis profunda arises from the truncus which perforates the anterior scalenic muscle.

Surgical Reconstruction of Occluded Extracranial Vertebral Arteries

Three patients with proximal vertebral artery occlusive disease were treated by extracranial surgical reconstruction. Two patients (Cases 1 and 2) had symptoms of vertebrobasilar insufficiency and one (Case 3) had severe headache. Angiography demonstrated bilateral vertebral stenosis in Case 1, right stenosis and left occlusion in Case 2, and right hypoplasia and left stenosis in Case 3. In Case 2, the left vertebral artery was occluded at its origin and was reconstituted via the thyreocervical trunk at the C3 level. Right carotid angiography during left carotid artery compression failed to demonstrate blood flow through the left carotid artery in Cases 1 and 3. The posterior communicating arteries were hypoplastic or absent bilaterally and right vertebral angiography did not demonstrate blood flow in the left vertebral artery in Case 3. Three types of surgical procedures were undertaken: left proximal vertebral artery to common carotid artery end-to-side anastomosis in Case 1; left external carotid artery to midcervical vertebral artery end-to-side anastomosis in Case 2; and transposition of the left vertebral artery to the distal subclavian artery with end-to-side anastomosis in Case 3. The authors successfully performed surgical reconstruction of the proximal vertebral artery by means of internal carotid artery shunting in Case 1 and external shunting between the carotid and vertebral arteries in Case 3, to avoid the danger of carotid and vertebral artery cross-clamping during the anastomoses.

Arterial vascularization of the porcine thymus in the 2d half of the prenatal period

AbstractEighteen male and 13 female pig fetuses taken from 4 dams were studied. Each litter formed a developmental group: the first had 7 fetuses 10 weeks old, the second had 9 fetuses 14 weeks old, the third had 9 fetuses 16 weeks old, and the fourth had 6 fetuses 17 weeks old. Our study shows that the number of blood supply sources increase with the age of the fetuses. The principal source of supply was the thyreocervical trunk which occurs only in the pig.