Mesenchymal-epithelial interactions are essential for the development of the male reproductive tract. Tissue recombination experiments have been used to define the characteristics of these interactions. When mesenchyme, embryonic connective tissue, is recombined with epithelium from another organ an instructive induction may occur in which the developmental fate of the epithelium is altered. In...

BACKGROUND Recent articles have published guidelines regarding the role of endoscopic surgery in the removal of frontal sinus osteomas. These guidelines recommend the endoscopic approach for small osteomas but recommend an osteoplastic flap for larger tumors. This study presents a series of endoscopically resected tumors both large and small. METHODS Retrospective chart reviews were performed...

Introduction: Vaginal adenosis is one of the rare diseases of the vagina, and almost all patients are asymptomatic. We report a case of spontaneous vaginal adenosis, which caused vesicovaginal fistula. Case Presentation: Our patient was a 25-year-old Japanese woman. She was admitted to our hospital, and her chief complaint was continuous urine flow from the vagina. We found a tumor with a vesic...

The demonstration of the importance of ovarian secretion or exogenous estrogen to a high mam mary tumor incidence in mice was followed by numerous studies of the estrous cycles of mice of different strains, in an attempt to correlate high mammary tumor incidence with some peculiarity of the cycle. In general, no significant and consist ent correlation could be demonstrated in this regard. Korte...

a five-year-old holstein cow with a history of vaginal prolapse was admitted to the large animal clinic, faculty of veterinary medicine, university of tabriz. according to the owner, she had a 5-month history of vaginal prolapse and frequent sanguineous discharge from the vagina. appetite was normal and its last parturition was two months ago. clinical examination revealed a tumor like mass tha...

introduction: ectopic tooth eruption may result owing to one of 3 processes: developmentaldisturbance, iatrogenic activity, or pathologic process, such as a tumor or a cyst. in rare cases, occlusion of the sinus ostia may predispose a patient to develop a maxillary sinus mucocele. when the maxillary sinus is invaded, symptoms usually occur late in the process.   case report: a 17 years old boy ...

A 63-year-old woman with a sense of perineal discomfort was referred to our hospital. Digital examination revealed an irregular rectal tumor, and the distance from the anal verge was 0.5 cm. The lower endoscopic examination demonstrated an ulcerated tumor with a sharply demarcated margin, 6 cm in size, occupying a half circumference of the rectum. There was another tumor, 2 cm in size, protrudi...