Sialocele

A sialocele is a localized, subcutaneous cavity that fills with saliva rather than blood or pus, most often arising after trauma, such as violence, an accident, or surgery, or occasionally after infection of a salivary gland. The condition is a recognized complication of salivary gland surgery, particularly parotidectomy, the surgical removal of the parotid gland, where it occurs in roughly five to ten percent of partial parotidectomy procedures; the swelling from a sialocele typically becomes apparent about eight to fourteen days after the triggering injury or operation. It is generally painless and is considered a mild, self-limiting complication rather than a dangerous one, and the fluid that collects is characteristically clear and yellow and contains amylase, a salivary enzyme that helps distinguish it on laboratory testing from other kinds of post-surgical fluid collections. Standard management is repeated aspiration, meaning the fluid is drained with a needle after the skin is disinfected with an antibacterial solution, and pressure dressings are typically not used; persistent cases that do not resolve with aspiration alone may require surgical drainage or injection of botulinum toxin to reduce further saliva production.