Wednesday, 13 February 2013

Enlarged Neck Node







Please note that the following is a general guideline only. For a full assessment, exclusion of any other underlying cause for your symptoms and an individualised treatment approach, you will need to be seen by a qualified specialist.








Epidemiology

> 40 Yr neck node is a malignancy Unless proven otherwise, M>F
>40 Yr Cystic mass in the neck is a degenerated cancer node, not a branchial cyst until proven otherwise
In the young -Inflammatory more likely, if cystic- branchial cyst

Aetiology
Most common mets are SCC > others ie thyroid/ adeno Ca/ melanoma
SCC=Primary sites nasopharynx > tonsil > retromolar trigone > tongue base > piriform sinus Then outside head and neck
Primary lymphoma-less common
Inflammatory; bacterial/ viral/ TB should be considered)


Signs and Symptoms

Hx suggestive more of an inflammatory node are : acute onset, painful, resolving, younger patient
Hx suggestive of a neoplasm- progressive enlargement, generally non tender, SCC hard, may get cystic degeneration Lymphoma rubbery.
Ask about symptoms of a possible primary site;  
                                                                                                      -upper aerodigestive tract: Dysphagia, Otalgia due to referred pain 
-Skin CA
-Thyroid cancer/risk of cancer

Examination
Node or nodes: what is the consistency, is it very tender(inflammatory)
Look for a primary site (oral cavity, oropharynx, Flexible scope: nsopharynx, Hypopharynx, larynx, skin, thyroid, melanoma)
If a low neck node look for a primary breast/ chest/ GI/ testicular origin


Investigation
If acute onset may observe/ do blood work up check for EBV, CMV etc
US guided FNAC: (if any possibility of neoplasm) : do all the stains-Cytokeration-SCC, Lukocyte antigens-lymphoma, HMB45, s 100-melanoma, Thyroid AB
Also consider TB culture on FNA
If non diagnostic need and excisional biopsy and through look for a primary site i.e. Panendoscopy & blind biopsies of nasopharynx, tongue base, tonsillectomy (wide resection)
Cystic mets have poor FNA diagnostic yield and do need excisional biopsy (cyltic node in an adult is a cancer unless proven otherwise;NOT a branchial cyst!)
If low cervical nodes/ adeno CA on FNA: work up for non head and neck primary (chest/ prostate/ renal/ GI/ breast)

Treatment
Metastatic SCC; Neck dissection, treatment of the primary site and XRT +/- Chemotherapy
If Thyroid: need total thyroidectomy, neck dissection and post op radioactive treatment
if Lymphoma -CHOP etc


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