Tumor like lesions of testis

1. Tumor-Like LesionsTumor-Like Lesions
of Testisof Testis

2. Testicular Tumors
Classification:
1. Germ cell tumors (GCTs): (95%) of primary testicular tumors.
a. Seminomas (45%).
b. Non-seminomas (50%): mixed GCTs (40%), Teratomas and teratocarcinomas
(30%) Embryonal cell carcinoma (20%). Choriocarcinoma (1%). Yolk sac
tumors
2. Gonadal Stromal Tumors: Leydig cell tumors and Sertoli cell tumor.
3. Secondary Tumors: Lymphoma, leukemia, and melanoma are the
most common malignancies that metastasize to the testicle.

3. SeminomasSeminomas
Testicular Tumors
Embryonal Cell
Carcinoma
Yolk Sac TumorTeratomaChoriocarcinomasLeydig and Sertoli
cell carcinomas
Lymphoma

5. Epidermoid Cysts.Epidermoid Cysts.
Testicular Microlithiasis.Testicular Microlithiasis.
Orchitis.Orchitis.
Hemorrhage.Hemorrhage.
Infarction.Infarction.
Granulomatous OrchitisGranulomatous Orchitis (Tuberculosis, Syphilis, Fungi, And Parasites).(Tuberculosis, Syphilis, Fungi, And Parasites).
Tubular Ectasia Of The Rete Testis.Tubular Ectasia Of The Rete Testis.
Testicular Cysts.Testicular Cysts.
Adrenal Rests.Adrenal Rests.
Sarcoidosis.Sarcoidosis.

6. - Constitute Approximately 1% Of Testicular Tumors.
- Although Pathologically These Lesions Are True Cysts,
They Are Filled With Cheesy Laminated Material That
Appears Solid On Radiologic Images.

7. US

8. MRI

9. - 0.6% of patients.
- Incidental finding.
- The prevalence of carcinoma in patients with
testicular microlithiasis has been reported as high as
40%.

10. Microcalcifications appear as
laminated concretions within
the lumen of the seminiferous
tubules

11. Microcalcifications appear as
laminated concretions within
the lumen of the seminiferous
tubules

20. Multiple pathogens including
tuberculosis, syphilis, fungi,
and parasites may cause a
granulomatous epididymo-
orchitis.

21. • These processes tend to
involve the epididymis first
and to a much greater extent
than the testis.
• An isolated testicular mass
would be extremely unusual.

22. • Dilatation of the rete testis is thought to occur
secondary to obstruction in the epididymis or
efferent ductules.
• Tubular ectasia is located posteriorly by the
mediastinum and is composed of a series of
dilated tubules.

27. • Seen in patients with congenital adrenal hyperplasia and
rarely in those with cushing syndrome.
• These rests are usually less than 5 mm and if these cells
are exposed to elevated levels of adrenocorticotropic
hormone, they can enlarge to form masses.

28. • Multiple, bilateral, and
eccentrically located.
• Hypoechoic masses or
heterogeneously hyperechoic
masses

29. • Low Signal Intensity On BothLow Signal Intensity On Both
T1- And T2-weighted ImagesT1- And T2-weighted Images

30. • Rarely affects the genital tract.Rarely affects the genital tract.
• More commonly affects the epididymis but can, inMore commonly affects the epididymis but can, in
some cases, also involve the testis.some cases, also involve the testis.
• Testicular lesions can be solitary, but they are moreTesticular lesions can be solitary, but they are more
typically multiple, small, bilateral massestypically multiple, small, bilateral masses