FLT4 and cancer: A significantly higher number of lymphatics without VEGFR-3 expression from NMGs to MTs (Spearman test: P < 0.05) in the extratumoral (extramammary) fields, but no significant difference in the intratumoral (intramammary) fields was found in the three diagnostic groups (normal mammary gland, benign and malignant tumours).