Differential Diagnosis for Swollen Testicule
- Single most likely diagnosis + Epididymitis: This is the most common cause of a swollen testicle, typically resulting from a bacterial infection, often related to a urinary tract infection or sexually transmitted infection.
- Other Likely diagnoses + Orchitis: Inflammation of the testicle, often caused by viral or bacterial infections, which can lead to swelling and pain. + Hydrocele: A collection of fluid around the testicle, causing swelling, which can be primary (idiopathic) or secondary to trauma, infection, or tumor. + Varicocele: Enlargement of the veins within the scrotum, similar to varicose veins, which can cause swelling and discomfort.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.) + Testicular torsion: A medical emergency where the spermatic cord becomes twisted, cutting off blood supply to the testicle, requiring immediate surgical intervention to save the testicle. + Testicular cancer: Although less common, testicular cancer can present with swelling, and early detection is crucial for effective treatment and prognosis.
- Rare diagnoses + Spermatocele: A cystic structure filled with sperm, which can cause swelling but is usually painless and benign. + Hematocele: A collection of blood within the scrotum, often resulting from trauma, which can cause swelling and pain. + Filariasis: A parasitic infection that can cause swelling and inflammation of the scrotum, more common in tropical regions.