cancer
The report compares gene expression in normal versus cancerous tissue.
She underwent surgery in April to have a cancerous thyroid gland removed.
Some strains of the virus can turn cancerous and yet others disappear by themselves.
A biopsy is done to determine whether the a mass is cancerous or benign.

SMART Vocabulary: related words and phrases

Cancer
acinic cell carcinoma
acral lentiginous melanoma
adenocarcinoma
adenoma
aggressive
benignancy
benignant
big C
bilateral acoustic neurofibromatosis
bilateral acoustic schwannoma
carcinogen
carcinogenic
inoperable
lymphoma
malignantly
meningioma
metastasis
metastatic
precancerous
Wilms' tumour