101. Thoracic Outlet Syndrome - DynoMed.com thoracic outlet syndrome (TOS) results from a compression of the nerves that Causes of thoracic outlet syndrome? In many cases, no specific cause of TOS http://www.dynomed.com/encyclopedia/encyclopedia/shoulder/Thoracic_Outlet_Syndro

Return Records Thoracic Outlet Syndrome Causes Symptoms Treatment What is Thoracic Outlet Syndrome? Thoracic outlet syndrome (TOS) results from a compression of the nerves that pass into the arms from the neck (brachial plexus).  The corridor through the area between the neck and the armpit (thoracic outlet) is narrowed causing the compression.  This compression causes pain in the shoulder, arm or hand or some combination of the three. This condition is difficult to diagnose and many times, the doctor will need to rule out other conditions before making a diagnosis.  Causes of Thoracic Outlet Syndrome? In many cases, no specific cause of TOS is found.  However, any other condition, which results in growth or movement of the tissues near the thoracic outlet, can cause the syndrome to form.  Examples of other conditions includes: Muscle enlargement Injuries to the area Extra rib from the neck at birth (cervical rib) Large callus from a healed clavicle fracture in an adult Tumors at the upper part of the lung Poor posture, especially in women with large breasts

102. Thoracic Outlet Compression Syndrome Compressing lesion is usually congenital; 30% of cases follow trauma (eg whiplash injury). Causes of thoracic outlet compression syndrome http://www.surgical-tutor.org.uk/system/locomotor/tos.htm

Up Degenerative and rheumatoid arthritis Hip replacement surgery Acute osteomyelitis ... Scoliosis Thoracic outlet compression syndrome Describes a collection of upper limb neurological and vascular symptoms Arise from proximal compression of neurovascular structures Usually affects middle aged women Male : female ratio is 1:3 10% have bilateral symptoms Pathophysiology Compression can result from a bone, muscle or fibromuscular band Compressing lesion is usually congenital 30% of cases follow trauma (e.g. whiplash injury) Clinical features Neurological features are more common than vascular Subclavian artery aneurysm and axillary vein thrombosis are uncommon Symptoms often worsened by carrying weights or lifting arms above head Differential diagnosis includes: Cervical spondylosis Distal nerve compression Pancoast's tumour Connective tissue disorders Vascular and venous embolic disease Diagnosis depends mainly on the history Signs are few but diagnosis may be confirmed with the Roos test - Reproduction of symptoms with arms flexed and abducted Subclavian compression tests (e.g. Adson's manoeuvre)

103. Thoracic Outlet Compression Syndrome - Patient UK thoracic outlet Compression syndrome Patient UK. A directory of UK health, disease, illness and related medical websites that provide patient information. http://www.patient.co.uk/showdoc/40001653/

PatientPlus articles are written for doctors and so the language can be technical. However, some people find that they add depth to the articles found in the other sections of this website which are written for non-medical people. Thoracic Outlet Syndrome Damage to eighth cervical and first thoracic nerve roots (part of brachial plexus) and/or subclavian vessels either by compression over a cervical or abnormal thoracic rib or an aberrant fibrous band Epidemiology Risk factors Most commonly seen in middle-aged women Presentation Symptoms Muscles weakness and atrophy of the hand and wrist. Pain, loss of sensation and tingling in the medial forearm and little and first fingers. Pain often follows carrying heavy items. Occasionally, cyanosis and swelling of arm. Less commonly, Raynaud's phenomenon Signs Occasionally Horner's syndrome , bruits at clavicle or in axilla. Damage to the lower part of the brachial plexus may lead to weakness and wasting of the small hand muscles, and of the medial forearm wrist and finger flexors Investigations X-ray for cervical rib, nerve conduction studies.

104. Impedance Plethysmographic Observations In Thoracic Outlet Syndrome. Nerurkar SN J Postgrad Med, Online version this peerreviewed periodical, a publication of the Staff Society of Seth GS Medical College and KEM Hospital, India, http://www.jpgmonline.com/article.asp?issn=0022-3859;year=1990;volume=36;issue=3

105. Www.medicinenet.com/rss/specialty/Thoracic_Outlet_ http://www.medicinenet.com/rss/specialty/Thoracic_Outlet_Syndrome.xml

http://www.medicinenet.com/Thoracic_Outlet_Syndrome/index.htm MedicineNet Thoracic Outlet Syndrome Specialty en-us Wed, 31 Aug 2005 00:00:00 PDT Wed, 31 Aug 2005 00:00:00 PDT http://www.medicinenet.com/images/mn_144x35.gif http://www.medicinenet.com/script/main/hp.asp Wed, 31 Aug 2005 00:00:00 PDT Tue, 9 Aug 2005 00:00:00 PDT Thu, 14 Jul 2005 00:00:00 PDT Fri, 13 May 2005 00:00:00 PDT Sat, 16 Oct 2004 00:00:00 PDT Mon, 22 Apr 2002 00:00:00 PDT

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