الفهرس 
ANATOMY OF THE NECKOnly 14 pages are availabe for public view
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Abstract
There is apparently increasing value to characterize head and neck
lymphadenopathy which could be divided into benign and malignant forms; as it
helps in early detection of malignancies as well as determining the relevant line of
treatment or management. The benign group includes infection and inflammation
while the malignant group includes primary as lymphoma and secondary as
metastasis.
The lymph nodes could be assessed by different radiological methods as
US, CECT and conventional MRI according to the following criteria: size,
morphology and enhancement pattern which participate in suggesting the nature of
the cervical lymph node whether it is benign or malignant. The size criterion (10 mm
in diameter) is most commonly used criterion.
The lymph node is predicted to be benign if it is small in size (less than or
equal 10 mm) and shows smooth lobulated borders as well as homogenous signal
intensity of its parenchyma. Whilst predicted to be malignant if it is enlarged (more
than 10 mm especially when known primary cancer is present) or shows speculated,
indistinct borders, and heterogeneous signal intensity of its parenchyma.
Diffusion gives good support or exclusion of the nature of the lymph nodes
either being benign or malignant. DWI is able to characterize tissue based on
differences in water mobility. Hypercellular tissue, such as that occurring within.