Category Nuances for null:

• solid,
• common,
• primary,
• malignant,
• endocrine,
• clinical,
• active,
• metastatic,
• rare,
• recurrent,
• adjacent,
• invasive,
• autoimmune,

Simple Categories for null:

• malignancy,
• disorder,
• tumour,
• neoplasm,
• disease,
• carcinoma,
• tumor,
• cancer,