Among individuals of many nontropical species, seasonal breeding is timed by tracking changes in the daily photoperiod. Transfer of rodents to short (< 12 h of light/day) day lengths for 6 to 14 weeks can induce regression of the testes mediated by apoptosis. After 16 to 20 weeks of short day exposure, reproductive function is "spontaneously" initiated, and testicular recrudescence is observed....

The testicular tumor metastatic spread via the lymphatic system, and the anatomical distribution of this, finds his target in the retroperitoneal nodes. Male patient 28 years old with a history of bilateral orchidopexy is presented. It was performed a left orchiectomy and a biopsy of the ulcerated right inguinal mass, with diagnosis of malignant teratoma. Metastatic testicular tumors in inguina...

We present a case of upper gastrointestinal bleeding in an otherwise healthy 18-year-old man who presented with melena. Endoscopy revealed an ulcerated mass in the stomach and pathology confirmed this to be a malignant, poorly differentiated choriocarcinoma. Further imaging showed a left testicular mass with evidence of pulmonary, gastric, and brain metastases, and blood tests revealed an hCG l...

Figure 1 a. Longitudinal US image of the right testis show a bilobulated mass in the upper medial aspect of the testis. The mass had sharp margins, composed of a central echogenic area and of alternating hyperechogenic and hypoechogenic rings in the periphery (onionskin sign), measuring 2.4 x 1.7 x 1.7 cm. b. Longitudinal Doppler-US image of the right testis demonstrates the absence of vascular...

OBJECTIVE [corrected] To report a rare case of secondary testicular plasmocytoma in the context of a testicular mass. METHOD We introduced a patient with plasmocytoma and a testicular infiltration of his systemic affection. RESULT An inguinal orquiectomy was performed to treat the testicular infiltration and no recurrence of the process was seen after 6 months of follow up. CONCLUSIONS Pl...

Testicular metastases are a rare finding. Typically, a testicular metastasis will present as a complication of progressive disease or as a primary sign of malignancy. Excluding lymphoma and leukemia, prostate cancer is the most common primary site that metastasizes to the testes. Testicular metastases resulting from squamous cell carcinoma of the lung have rarely been reported in previous liter...

Primary testicular lymphoma (PTL) is a rare testicular tumor representing less than 9% of all testicular cancers. PTL usually tends to spread to or relapse at nodal structures or extra-nodal sites such as contralateral testes, central nervous system, skin, lung, pleura, waldeyer's ring and soft tissues. We present a case of PTL with huge left atrial mass, an extremely unusual site of involvemen...

A 28-year-old man presented with a seven-day history of testicular pain. Physical examination revealed a mass in the lower pole of the left testis. This mass was a tumour suspect on scrotal ultrasound and MRI. Testicular tumour markers were negative. A radical orchidectomy was performed. Histologically, the diagnosis of polyarteritis nodosa (PAN) was made. Retrospectively, the diagnosis of PAN ...

Leiomyoma of the bilateral testicular tunica albuginea is extremely rare. To our knowledge, there are only 3 definitely reported cases. This is the first report of bilateral testicular tunica albuginea leiomyomas as a potential cause of male infertility. Herein, we report a case of a 47-year-old man who presented with painless bilateral testicular masses for more than 30 years, besides he also ...

Many studies have demonstrated an association between diffuse bilateral testicular microlithiasis (TM) and gonadal and extragonadal germ cell tumors. Nevertheless, it is still uncertain whether ultrasound surveillance is really necessary in patients with TM in the absence of other risk factors such as previous testicular cancer, a history of cryptorchidism or testicular atrophy. We report the c...