Table 2.

Microscopic mimickers of testicular and paratesticular neoplasia

Testicular

Inflammatory-reactive lesions

Lymphocitic orchitis (Testicular pseudolymphoma)

Rosai-Dorfman disease

Sertoli cell hyperplasia

Pick adenoma

Hamartomatous proliferation testicular feminization syndrome

Interstitial cell hyperplasia

Leydig cell hyperplasia

Testicular “tumor” of the adrenogenital syndrome

Hyperplasia of the rete testis

Epididymis

Adenomatoid hyperplasia

Tunicas albuginea-vaginalis

Mesothelial hyperplasia

Spermatic cord

Vasitis nodosa

Inflammatory pseudotumor (Funiculitis proliferans)

Miscellaneous other lesions