Syphilitic Osteitis of the Manubrium Sterni Mimicking Malignancy: An Emerging Diagnostic Pitfall in Young Adult

Syphilitic osteitis is a rare manifestation of syphilis that occurs in < 1% of untreated cases, typically affecting the skull, tibia, and sternoclavicular region, and often mimicking malignancy. A 24-year-old man presented with 2 weeks of progressive anterior chest pain and night sweats.