Diagnosis: Tysonitis
The clinical history was consistent with a diagnosis of gonococcal urethritis complicated by a periurethral gland abscess. The location of the swelling was most consistent with an abscess in the Tyson’s gland (also known as tysonitis). The Tyson’s (or preputial) glands of the penis are sebaceous-type glands on either side of the frenulum at the balanopreputial sulcus.1 In women, an abscess of the periurethral Skene’s gland is an analogous gonorrheal complication.
Case reports of gonorrheal infection of Tyson’s gland have documented infection with and without symptoms of urethritis.2-4 Diagnosis in this case was confirmed by sending the discharge for nucleic acid amplification testing (NAAT), which was positive for Neisseria gonorrhoeae and negative for Chlamydia trachomatis.
Other diagnostic possibilities. The differential diagnosis of acute swelling on the penile shaft includes syphilis, chancroid, lymphogranuloma venereum, herpes simplex virus, Behçet’s syndrome, a drug reaction, erythema multiforme, Crohn’s disease, lichen planus, amebiasis, scabies, trauma, and cancer.5
How this patient’s attempt at “safe sex” failed
Oropharyngeal gonococcal infection was the route of transmission implicated in this patient’s infection. When specifically asked about his sexual encounter, our patient admitted that while he was diligent about using a condom for intercourse, he did not use a condom when he received oral sex.
The prevalence of pharyngeal involvement is estimated to be 10% to 20% among women and MSM (men who have sex with men) who have genital gonorrheal infection.6 The risk of contracting N gonorrhoeae when receiving oral sex from an infected partner is unknown.
A common disease, a not-so-common complication
Genital infection by N gonorrhoeae remains the second most common notifiable disease in the United States, with 301,174 cases reported in 2009.7 Effective antimicrobial treatment has reduced the occurrence of local complications of gonococcal infection. Nevertheless, complications of gonococcal urethritis like the ones that follow do occur.