The testicular capsule was studied histologically, morphometrically, ultrastructurally and immunohistochemically in the Japanese quail, domestic fowl, turkey and duck (all members of the Galloanserae). The testicular capsule was, relative to mammals, thin, being 81.5 +/- 13.7 microm in the quail, 91.7 +/- 6.2 microm in the domestic fowl, 104.5 +/- 29.8 microm in the turkey and 91.8 +/- 18.9 mic...

Ryan JW, et al. BMJ Case Rep 2017. doi:10.1136/bcr-2017-219519 Description A man in his 60s presented for a testicular ultrasound due to asymptomatic scrotal swelling. Ultrasound showed a right-sided varicocoele (figure 1). A varicocoele is an abnormal dilatation of the pampiniform venous plexus in the scrotum. A renal ultrasound demonstrated a heterogeneous mass arising from the right kidney (...

Leydig cell tumors are rare and represent 1% to 3% of all tumors of the testis. Leydig cell tumors affect males at any age, but there are 2 peak periods of incidence: between 5 and 10 years and between 25 and 35 years. Their main clinical presentation is a testicular mass associated with endocrinal manifestations that are variable according to age and appearance of the tumor. Our patient, a 17-...

Primary testicular NK/T-cell lymphoma is rare. We report a 61-year-old Thai man who presented with right testicular abscess clinically but tissue obtained from incision and drainage was proven to be NK/T-cell lymphoma. The lymphoma cells were small to medium in size and showed angiocentricity with associated necrosis. The lymphoma cells were CD3+ (cytoplasmic), CD43+, CD56+, TIA-1+, Ki-67+ (nea...

INTRODUCTION Malignant fibrous histiocytoma is a very common subtype of soft-tissue sarcoma in middle and late adulthood. However, malignant fibrous histiocytoma of the testis is very rare in adolescents. CASE PRESENTATION We report here the case of a 14-year-old Han Chinese boy, who presented with left scrotal mass lasting for 20 days along with distending pain for 5 days. A physical examina...

BACKGROUND To describe 19 years of clinical experience managing pediatric patients with testicular yolk sac tumors at the Chongqing Medical University Affiliated Children's Hospital. METHODS This study involved a retrospective review of the records of 61 pediatric patients who presented with testicular yolk sac tumor at our institution between 1995 and 2014. RESULTS All patients presented w...

Polyarteritis nodosa (PAN) is a systemic necrotizing vasculitis that is generally restricted to medium-sized vessels. Here we describe the first case of a patient in which a bilateral testicular mass was a presenting symptom and the diagnosis was made on the basis of testicular histopathology. A 53-year-old Asian man presented with a history of constitutional symptoms and testicular swelling. S...

In Channa punctatus testicular regression commonly observed during spawning and postspawing phases of reproductive cycle. In the present study testicular regression was frequently noticed in fish maintained under both long photoperiod-warm temperature (LD 16 : 8-30 degrees C) and short photoperiod-warm temperature (LD 8 : 16-30 degrees C) regimes. Testicular regression was characterized by dist...

A 33-year-old male with a history of left testis Leydig cell tumor (LCT), 3-month status after left radical orchiectomy, presented with a rapidly enlarging (0.6 cm to 3.7 cm) right testicular mass. He underwent a right radical orchiectomy, sections interpreted as showing a similar Leydig cell-like oncocytic proliferation, with a differential diagnosis including metachronous bilateral LCT and me...

OBJECTIVE To determine whether decreased testicular levels of enzymes necessary for retinoic acid biosynthesis were associated with male infertility, as retinoic acid is known to be necessary for spermatogenesis. DESIGN Observational analysis of testicular tissue samples, sperm indices, and serum hormone concentrations. SETTING Two infertility centers in Chile. PATIENT(S) 32 infertile men...