垂体腺瘤组织切片

垂体腺瘤：肿瘤细胞弥漫成片或排成条索、巢状、假腺样或乳头状结构，间质为血管丰富的纤细间质，肿瘤细胞可有一定的异型性，但核分裂象罕见。基本资料：男性，64岁，无明显诱因出现恶心、呕吐2年余。MRI检查显示：鞍区占位病变，形态规则、边界尚清。大体检查：灰黄破碎组织一堆，质地中偏软。镜下所见：肿瘤细胞排列成巢状，由形态单一的细胞组成；核呈较一致的圆形，未见明确坏死及核分裂象，肿瘤细胞巢之间为血管丰富的纤维间质。病理诊断：垂体腺瘤。Based on the above information, please generate a textbook-style histology illustration depicting the typical microscopic features, using an H&E staining–like color scheme, at medium to high microscopic magnification. Do not generate any other images.