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CT-scan for GTV-N definition
NODES
:
Size, border, density, central fatty hilum
Picus D – Radiology – 1983
Plukker JThM – Best Pract Res Clin Gastroenterol – 2006
LIMITATIONS:
•
Reported overall
accuracy < 60% for mediastinal
lymph nodes, from
39% to
74% in coeliac
and
abdominal
lymph nodes
•
Lymphnoda
l metastases
adjacent
to the esophageal
wall
are
not visible
•
Dimensional criterion
can be not sufficient for all cases:
•
Metastases
have been found in
lymphnodes lower than 7mm
in larger diameter
•
Lymphnodes > 1 cm
may be enlarged by
inflammation
Patel AN – Surg Clin North Am – 2005