الفهرس 
Gross anatomy of head and neck
Pathology of head and neck cancerOnly 14 pages are availabe for public view
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Abstract
among the people in all ages that requires physicians like others elsewhere
in the body to determine the spread of the tumor in the body before
treatment plan as well as the follow-up of the disease and find out how it is
responding to treatment.
Although the combined/hybrid device is considerably more
expensive than other imaging modalities, it has the advantage of providing
functional imaging obtained by PET, which depicts the spatial distribution
of metabolic or biochemical activity in the body and correlating it with
anatomic imaging obtained by CT scanning in the same session.
This study aimed at studying the role of positron emission
tomography-computed tomography (PET-CT) using 18F-FDG in head and
neck cancer including the staging of primary head and neck cancer,
detecting the sensitivity, specificity and accuracy of PET/CT in assessment
of treatment response and detection of residual or recurrent disease as well
as identifying carcinomas of unknown primary.
The current study included 70 patients selected randomly among
patients referred to diagnostic radiology and medical imaging department
in Nasser Institute for Research and Treatment and Tanta university
hospital and proven by biopsy to have head and neck cancers. All the
patients were subjected to proper history taking: personal history,
complaint of the patient which varied according to the site of malignancy
(with neck swelling being the most common clinical presentation), past
history of any systemic diseases or other previous malignancies, focused
history on the current tumor (histopathological findings and previous.