FNAC is considered a safe procedure, but like any medical intervention, it carries a small risk of side effects. Potential side effects of FNAC can include mild pain or discomfort at the needle insertion site, bruising, bleeding, or infection. These side effects are generally minor and transient. In rare cases, serious complications such as damage to nearby structures or organs, allergic reactions to local anesthesia, or infection can occur, but these are highly uncommon. The healthcare provider performing the FNAC will take appropriate measures to minimize the risk of side effects and provide post-procedure care instructions to manage any discomfort effectively.