BACKGROUND Primary testicular lymphoma is a unique, rare and aggressive extra nodal non-Hodgkins Lymphoma (NHL). It is the most common testicular tumour in males between 60 and 80 years old OBJECTIVE To report a case of primary testicular lymphoma in a young man who has done very well on surgery and chemotherapy. METHODS The patient a Nigerian male civil servant who was single and aged 31 y...

BACKGROUND We hypothesized that infertile men with varicoceles have molecular/genetic defects that interact with varicoceles to induce infertility. Studies directly on testis tissue appeared to be a way to link histology, markers for molecular/genetic defects and spermatogenesis, but testis biopsies may induce morbidity. In this report, we present safety and efficacy data on ultrasonically guid...

Sperm morphology varies considerably across taxa, and postcopulatory sexual selection is thought to be one of the main forces responsible for this diversity. Several studies have investigated the effects of the variation in sperm design on sperm function, but the consequences of variation in sperm design on testis morphology have been overlooked. Testes size or architecture may determine the si...

BACKGROUND The term carcinoid (Karzinoide) was coined by German pathologist Oberndorfer in 1907. Primary testicular carcinoid tumors (TCT) are rare, constituting 0.23% of all testicular tumors. In this report we describe a case of primary TCT of the testis and present the results of an extensive literature review to cover all the aspects of carcinoid tumor, including the definition, classificat...

Abstract A one-year-old European shorthair feral cat with signs of heat was presented at the Veterinary Teaching Hospital Las Palmas de Gran Canaria University. After physical exam, histology, hormonal analysis, ultrasound and computed tomography (CT) studies were performed. Examination external genitalia revealed absence one testes in scrotal sac presence a structure whose appearance could sug...

The objective of the present study was to determine if the neurotropin receptors trkC and trkA are involved in embryonic testis development. These receptors bind neurotropin 3 and nerve growth factor, respectively. The hypothesis tested was that the absence of trkC or trkA receptors will have detrimental effects on testis development and morphology. The trkA and trkC homozygote knockout (KO) mi...