Figure 3From: Comparison of PCR-based detection of chromogranin A mRNA with traditional histological lymph node staging of small intestinal neuroendocrine neoplasiaSuspicious ātumorā cell clusters in lymph nodes that are negative for tumor metastasis on examination after H&E staining but positive for CgA RNA after PCR of lymph node tissue. The arrows point to suspicious minute cell clusters in case (3a) and (3b), shown under lower and higher magnification.Back to article page