[header] How to identify lumps on your cat [title] See a vet as soon as possible about new lumps. [step] In general, you should have any lumps that last more than a week or two checked out by your vet. However, it's worth noting that small lumps that are not growing, oozing anything, or bothering your cat are unlikely to be dangerous. 
[substeps] If a lump appears suddenly and grows noticeably, take your cat to the vet at your earliest convenience. [title] Monitor seemingly innocuous lumps.