Multiple names have been applied for these lesions including inflammatory pseudotumor, chronic proliferative periorchitis, proliferative funiculitis, fibromatous periorchitis, fibrous mesothelioma, benign fibrous paratesticular tumor, and reactive periorchitis [6, 7].
In case of high suspicion of malignancy or where fibrotic tissue diffusely occupies and encases the testicular tissue (fibromatous periorchitis), orchidectomy can be selected as a surgical procedure.
Four cases of filarial epididymitis, two cases each of non-specific granulomatous epididymitis and fibromatous periorchitis [Figure 1d] and one case of mesothelial cyst were reported.
Fibromatous periorchitis exhibits diffuse proliferative encasement of the testis and manifests grossly as an indurated testis reminiscent of malignancy.
Macroscopically, the changes observed more frequently in infected rams are abscess, usually located in the tail of the epididymis, thickening of the tunica vaginalis, fibrinous or fibrous periorchitis, and increase in size of seminal vesicles [1, 13].
Macroscopic changes in infected Actinobacillus Histophilus sheep (n = 10) seminis somni Abscess in the left epididymis tail 50% 50% Abscess in the left epididymis body 20% 40% Abscess in the right epididymis tail 10% 0% Scrotal swelling 10% 0% Fibrin in the pampiniform plexus 0% 30% Fibrinous periorchitis 20% 30% Hemorrhage adjacent left epididymis tail 20% 10% Tunica vaginalis thickening with fibrous 40% 60% adhesion Hypotrophy left testis 50% 10% Increase in volume of vesicular glands 30% 0% Increase in volume of the left urethral 10% 10% bulb Inguinal lymphadenomegaly 60% 20% Iliac lymphadenomegaly 50% 20% TABLE 3: Distribution, frequency, and intensity of inflammatory lesions in the genitourinary organs of rams experimentally infected with Actinobacillus seminis.
Meconium periorchitis (MPO) is an uncommon benign cause of a scrotal mass in the newborn.[sup.1] In utero bowel perforation can be caused by thickened meconium associated with cystic fibrosis, bowel atresia, volvulus or vascular compromise.
Meconium periorchitis. Urology 2006;68:202http://dx.doi.org/10.1016/j.urology.2006.03.061.
In horses, trauma may result in septic orchitis and periorchitis
but occasionally it can be of hematogenous origin (Kasaback et al., 1999; Belknap et al., 1988).
Histologically, they consist of dense fibrosis with a mixed inflammatory cell infiltrate and granulation tissue.[sup.1]-[sup.5] Rarely, fibrous pseudotumours may consist of a diffuse fibroinflammatory proliferation of the paratesticular/testicular soft tissues which encase the testis, more specifically known as fibromatous periorchitis.[sup.3,4]
Intraoperatively, there were signs of significant periorchitis with adhesions of the testicle to the scrotal wall and a hematocele.