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Figure 38b.  Diffuse adenomyomatous hyperplasia in a 72-year-old patient who was being evaluated for gastric carcinoma. (a) Contrast-enhanced CT scan shows diffuse gallbladder wall thickening with focal hypoattenuating nodularity (arrow). There is also a gastric mass present. (b) Photograph of an axial cross-section of the resected gallbladder shows diffuse thickening of the gallbladder wall with pigmented stones and debris embedded into cystically dilated glands of the adenomyomatous hyperplasia.