Certain pairs of visual patterns, when superimposed as if transparent, elicit a wavering percept in which one or the other pattern can enjoy temporary periods of exclusive visibility. This multistable perceptual phenomenon is called monocular rivalry or pattern rivalry (PR) and is most pronounced when the component patterns are faint and devoid of detail. The principal mechanisms that give rise...

Monocular rivalry was named by Breese in 1899. He made prolonged observation of superimposed orthogonal gratings; they fluctuated in clarity with either one or the other grating occasionally being visible alone. A year earlier, Tscherning observed similar fluctuations with a grid of vertical and horizontal lines and with other stimuli; we draw attention to his prior account. Monocular rivalry h...

Pure Sertoli cell tumours (SCTs) represent less than 1% of testicular neoplasms and malignant forms are rare. We present a unique case of a 69-year-old man who initially underwent inguinal orchidectomy for a malignant SCT. He then subsequently developed a paraumbilical cutaneous lesion which was histologically identical to the primary tumour. SCTs rarely metastasise. This is the first case of S...

CS I is defined negative or declining tumour markers to their half-life following orchidectomy and negative imaging studies of the chest, abdomen and retroperitoneum. Low risk CS I NSGCT are defined by the absence of vascular invasion, low percentage of embryonal carcinoma (ECA) and low proliferating Ki-67 index. High risk CS I NSGCT are defined by the presence of VI, high percentage of ECA and...

Combined treatment with ketoconazole and luteinising hormone releasing hormone analogue: a novel approach to resistant progressive prostatic cancer Adenocarcinoma of the prostate is androgen dependent in 80°' of patients. Most circulating testosterone is secreted by the testes, but the adrenal glands contribute appreciably towards production of androgens. Conventional endocrine management is cu...

Case 1 A 24-year-old man presented with a 6-month history of pain and swelling of the right testis. Examination revealed a hard, irregular, enlarged testis and signs of a pleural effusion. Chest X-ray confirmed the effusion together with widespread secondary spread. A right orchidectomy was performed and the testis found to be replaced by a malignant trophoblastic teratoma. Post-operatively he ...

Giant leiomyosarcoma of scrotum is a rare tumour. A case of scrotum leiomyosarcoma is presented in a 67 year old patient with scrotal filariasis which was managed successfully with total scrotectomy with bilateral orchidectomy, degloved penis reconstructed with rotation advancement supra pubic fasciocutaneous flap. We made a literature search proving the rarity of this lesion type. Only 36 case...

In this paper, we evaluated the historical features and physical examination findings, as well as laboratory tests and ultrasound examinations, in children with testicular torsion (TT), in order to improve diagnosis and treatment in this population. A retrospective review of patients with diagnosis of TT between January 1990 and January 2010 was performed. We included 118 cases in the study, ac...