Micrograph showing a prostate cancer (conventional adenocarcinoma) with<unk> . H&E stain. In pathology,<unk> , abbreviated<unk> , refers to the<unk>  of cancer to the space surrounding a nerve. It is common in head and neck cancer, prostate cancer and colorectal cancer.
Perineural invasion
Lymphovascular invasion
Tumor budding
Nuclear atypia
Field cancerization
Pleomorphism 
Mammoplasia
Colonial morphology