Infections
Steven S. Shen, MD, PhD
Jae Y. Ro, MD, PhD
Key Facts
Terminology
Inflammatory process of testis or epididymis due to microorganisms (bacteria, fungus, virus, etc.)
Etiology/Pathogenesis
Bacteria
Virus
Fungus
Parasites
Macroscopic Features
General enlargement of testicle
Mass lesion with pus, hemorrhagic cut surface
Microscopic Pathology
Variable mixed acute, chronic, or granulomatous inflammation
Abscess formation and seminiferous tubule necrosis
 This image shows acute bacterial orchitis with acute inflammation and necrosis of seminiferous tubule  . Microabscesses  associated with lymphocytes and hemorrhage are seen in the interstitium. |
 Acute epididymitis with abscess formation  is adjacent to epididymal epithelium  . There is a localized acute suppurative inflammation extending to the epididymal epithelium and stroma. |
TERMINOLOGY
Synonyms
Orchitis, epididymitis, epididymo-orchitis
Definitions
Inflammatory process of testis or epididymis due to microorganisms (bacteria, fungus, virus, etc.)
ETIOLOGY/PATHOGENESIS
Infectious Agents
