This case report describes an exceptionally late mesh-related complication occurring 16 years after transobturator tape placement for stress urinary incontinence. The patient developed a recurrent vaginocutaneous fistula and abscess 9 years after partial mesh removal, highlighting the long-term risks associated with retained synthetic material. Clinical presentation included persistent purulent discharge and inguinal abscess, with MRI confirming infection of the remaining sling arm and fistulization to the thigh. Complete surgical excision led to full recovery. This case emphasizes the potential for delayed mesh complications, even after prolonged asymptomatic periods. It underscores the importance of considering mesh-related pathology in patients with atypical infections and a remote surgical history, the key role of imaging in diagnosis, and the need for individualized, multidisciplinary management. Long-term vigilance and thorough patient counseling remain essential.