CGA and neoplasm: Sporadic Case 4, the smallest tumor (0.5 cm × 0.3 cm, Table 2) was partially, faintly positive for CT (about 70% of tumor cells) and was patchy (about 10% of tumor cell nests) strongly and weakly stained for CgA and SPY, respectively, with dysplastic calcification in the middle of the tumor, suggestive of the slow growth of the tumor (Table 2).