Stephen FennellShort answer Yes—sarcoids can sometimes be left untreated, but only with active monitoring and informed judgement. In many cases, doing nothing initially is reasonable. In others, it allows the condition to become significantly more difficult to manage. Why this is not a simple yes-or-no decision
Stephen FennellShort answer Sarcoids are rarely life-threatening, but they can become welfare-limiting and, in some cases, functionally debilitating. What the evidence shows Equine sarcoids are locally invasive fibroblastic skin tumours associated with bovine papillomavirus (BPV-1 and BPV-2). They do not metastasise in the classical cancer sense, which is why they are not typically fatal.
Stephen FennellNo—sarcoids do not always need to be removed. In many cases, selective management or careful observation is more appropriate than immediate intervention. Why this question is more complex than it sounds It’s natural to assume that any tumour should be removed as quickly as possible. That logic works for many types of cancer—but equine sarcoids behave differently.