{Reference Type}: Case Reports {Title}: Post vasectomy chronic pain: are we under diagnosing vasitis? A case report and review of the literature. {Author}: Jones A;Vazirian-Zadeh M;Phan YC;Mahmalji W; {Journal}: Aging Male {Volume}: 23 {Issue}: 5 {Year}: Dec 2020 {Factor}: 2.398 {DOI}: 10.1080/13685538.2018.1513481 {Abstract}: Acute vasitis is a rare infection of the vas deferens. Clinical presentation and disease rarity can cause difficulty in correctly diagnosing this condition. Adjuncts to aid diagnosis can be used that include ultrasound scan (USS) or computed tomography. We report a unique case of acute vasitis following vasectomy, reversal and subsequent re-do vasectomy diagnosed using USS.