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Ki-67 Immunostaining in Pancreatic Cancer and Chronic Active Pancreatitis: Does In Vivo FDG Uptake Correlate with Proliferative Activity?

Departments of Nuclear Medicine, Surgery, and Pathology, University of Ulm, Ulm, Germany

View larger version (7K): [in a new window]   FIGURE 1. Scattergram of FDG SUVs in patients with histopathologically confirmed ductal adenocarcinoma of pancreas (DPC) and CAP (CP).

View larger version (122K): [in a new window]   FIGURE 2. (A and B) Iteratively reconstructed FDG PET images (transaxial [A] and coronal [B] slices) of patient with histopathologically confirmed ductal adenocarcinoma of pancreatic head, which shows intense FDG accumulation. (C and D) Corresponding images of patient with histopathologically proven chronic active pancreatitis. Similar focal accumulation of FDG in pancreatic head region is apparent.

View larger version (164K): [in a new window]   FIGURE 3. Typical cross section of pancreatic adenocarcinoma stained with antihuman nuclear Ki-67 antibody MIB-1 and lightly counterstained with hematoxylin. Amount of Ki-67–positive tumor cells is approximately 60% in this cross section. (x200)

View larger version (170K): [in a new window]   FIGURE 4. Cross section of CAP stained with antihuman nuclear Ki-67 antibody MIB-1 and lightly counterstained with hematoxylin. Amount of Ki-67–positive tumor cells is approximately 2% in this cross section. Left upper part of figure shows newly formed reactive lymph node with lightly positive Ki-67 immunostaining. (x200)

View larger version (7K): [in a new window]   FIGURE 5. Scattergram of Ki-67 values in patients with histopathologically confirmed ductal adenocarcinoma of pancreas (DPC) and CAP (CP). pos. = positive.