它们源于小叶间质，但不象纤维腺瘤，它们不常见而且大的多。
They arise from interlobular stroma, but unlike fibroadenomas are not common and are much larger.
胰腺为不正的四边形，呈淡粉色，柔软而多具小叶的分支结构。
The pancreatic gland is also trapeziform, soft and ight pale pink. The structure of pancreatic gland has ramus with sublobes.
胰腺为不正的四边形，呈淡粉色，柔软而多具小叶的分支结构。
The pancreatic gland is also trapeziform, soft and ight pale pink. The structure of pancreatic gland has ramus with sublobes.
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