It can be microscopic and multifocal, invisible to naked eye grossinspection.
它可以非常微小和多灶性，致肉眼检查难以发现。
2
On grossinspection, the stump of the resected vagus nerve could be identified, with nerve bundles splaying over the tumor surface.
大体检查在肿瘤一端可见切断的神经残端及其分散混入肿瘤浅面的神经纤维束。
3
All gastric ulcers are biopsied, since grossinspection alone cannot determine whether a malignancy is present. Smaller, more sharply demarcated ulcers are more likely to be benign.