Small cellcarcinomas usually do not show large prominent nucleoli, whereas melanomas often do, accompanied by occasional intranuclear pseudoinclusions.
小细胞癌常无明显的大核仁(而恶性黑色素瘤常有),偶尔伴有核内假包涵体。
2
Stem-cell turnover means, for example, that tumours of the large intestine are commoner than those of the small one, while basal-cellcarcinomas in the skin are commoner than melanomas.