The Testicular Descent In Human
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The Testicular Descent In Human
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Author : K.J. Barteczko
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Testicular Descent In Human written by K.J. Barteczko and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
The testicular descent (descensus testis) is described in a complete series of human material from stage 14 CC to the adult state by using own phases. Central points of interest in this work are answers to questions which have been discussed controversially by generations of scientists and which are wrong or inadequately documented in most textbooks of embryology: Does an inner gonadal descent exist? What about origin, role and fate of gubernaculum H., processus vaginalis peritonei and gonadal ligaments? How do the annexes of testis come into their final position? The results are based on serial sections, scanning electron microscopy, three-dimensional reconstructions, microdissection and immunohistochemistry.
The Testicular Descent In Human
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Author : K.J. Barteczko
language : en
Publisher: Springer Science & Business Media
Release Date : 2000-07-26
The Testicular Descent In Human written by K.J. Barteczko and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-07-26 with Medical categories.
The testicular descent (descensus testis) is described in a complete series of human material from stage 14 CC to the adult state by using own phases. Central points of interest in this work are answers to questions which have been discussed controversially by generations of scientists and which are wrong or inadequately documented in most textbooks of embryology: Does an inner gonadal descent exist? What about origin, role and fate of gubernaculum H., processus vaginalis peritonei and gonadal ligaments? How do the annexes of testis come into their final position? The results are based on serial sections, scanning electron microscopy, three-dimensional reconstructions, microdissection and immunohistochemistry.
The Testicular Descent In Human
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Author : K. J. Barteczko
language : en
Publisher:
Release Date : 2000-07-26
The Testicular Descent In Human written by K. J. Barteczko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-07-26 with categories.
Descent Of The Testis
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Author : John M. Hutson
language : en
Publisher: Springer
Release Date : 2015-12-18
Descent Of The Testis written by John M. Hutson and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-18 with Medical categories.
This book provides a state of the art overview of all aspects of testicular descent and cryptorchidism, including the mechanisms of descent and the causes, consequences, diagnosis, and treatment of undescended testis. The advances in understanding that have been achieved over the past two decades are clearly explained, covering the latest genetic information on the causes of normal and abnormal testicular descent, the role of INSL3 in transabdominal migration, and the evidence that a neurotransmitter released from the genitofemoral nerve mediates androgenic control of inguinoscrotal descent. Exciting changes in the management of both congenital and acquired cryptorchidism, such as the widespread use of laparoscopy for impalpable testes inside the abdominal cavity, are fully described. Evidence for the benefits of orchidopexy within the first year of life is reviewed, and an individual chapter is also devoted to hormonal treatment. Throughout the book due attention is given to ongoing controversies and divergences of opinion. This new edition of Descent of the Testis will be a timely update and valuable reference for all who are involved in research into testicular descent and management of cryptorchidism.
Fundamentals Of Male Infertility
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Author : Sherman Silber
language : en
Publisher: Springer
Release Date : 2018-07-31
Fundamentals Of Male Infertility written by Sherman Silber and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-31 with Health & Fitness categories.
This book analyzes the basic science and treatment of male factor infertility with Dr. Silber’s characteristic honesty and clear thinking. It describes finally what works and what doesn’t work. It will inspire everyone in reproductive medicine (Gynecologists, Urologists, Embryologists and Endocrinologists) who wish to better understand male infertility.
Atlas Of Pediatric Surgery
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Author : Ahmed H. Al-Salem
language : en
Publisher: Springer Nature
Release Date : 2020-01-02
Atlas Of Pediatric Surgery written by Ahmed H. Al-Salem and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-02 with Medical categories.
This book provides a practical guide to the congenital and acquired problems related to pediatric surgery and urology. A range of topics are covered, including; abdominal wall hernias, hemangioma and vascular malformations, gastrochesis, achalasia, congenital gastric outlet obstruction, renal and liver tumors, intestinal malrotation, and hydronephrosis. The book aims to be a quick reference text for the diagnosis and treatment of pediatric surgery conditions and presents information relevant to general surgeons, pediatricians, pediatric surgeons, and medical trainees.
An Illustrated Guide To Pediatric Surgery
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Author : Ahmed H. Al-Salem
language : en
Publisher: Springer
Release Date : 2014-09-24
An Illustrated Guide To Pediatric Surgery written by Ahmed H. Al-Salem and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-24 with Medical categories.
Written in a simple point by point style for ease of use, this volume covers all aspects of pediatric surgery with emphasis on important points for diagnosis and management. Each chapter covers a topic with emphasis on the most common conditions in neonatal and general pediatric surgery. The text is well illustrated with clinical, operative, radiological, and histopathological color figures and illustrations. The book also presents some of the rare conditions encountered in pediatric surgery, as well as common pediatric urology conditions. An Illustrated Guide to Pediatric Surgery is a useful reference to pediatric surgeons, specialists, fellows and residents, as well as general surgeons, pediatricians, neonatologists, medical students and interns interested in pediatric surgery.
Evaluation And Treatment Of Cryptorchidism
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Author : U. S. Department of Health and Human Services
language : en
Publisher: Createspace Independent Pub
Release Date : 2013-03-23
Evaluation And Treatment Of Cryptorchidism written by U. S. Department of Health and Human Services and has been published by Createspace Independent Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-23 with Medical categories.
Cryptorchidism is a congenital condition in which one or both testicles are not appropriately positioned in the scrotum at birth and cannot be moved into the proper position manually. The term “cryptorchidism” literally means “hidden testicle” and is often used interchangeably with the term “undescended testicle.” It affects an estimated 3 percent of full-term male neonates and up to 30 percent of premature male infants, making it the most common male genital anomaly identified at birth. The etiology of cryptorchidism is not well understood, and the undescended testicles may be palpable or nonpalpable. Clinical decisionmaking about treatment is influenced by many factors, including whether or not the testicle is palpable, whether the condition is present unilaterally or bilaterally, the age at presentation, and coexisting medical conditions. Once cryptorchidism is diagnosed, treatment choices may include watchful waiting, hormonal treatment, or surgery. Decisions about which clinical pathway to follow may be guided by results of hormonal stimulation testing and/or imaging, particularly when the testicle is nonpalpable. Clinical uncertainty and lack of guidance exist on the appropriate clinical pathway for treatment of cryptorchidism. Areas of uncertainty include selecting the optimal approach to treatment planning (imaging vs. no imaging, hormonal stimulation testing or not) and intervention (surgical vs. hormonal, one-stage vs. two-stage FS, various modifications of each of the surgical techniques, and open vs. laparoscopic approach). The immediate goal of most interventions for cryptorchidism is to reposition the undescended gonad in a “normal” position in the scrotum. Intermediate outcomes include psychological benefits in terms of body image, and long-term goals include preservation of fertility and prevention of testicular malignancy. All of these outcomes are important to patients.This review focuses on the effectiveness of imaging for identifying and correctly locating testicles, on the use of hormonal stimulation for identifying anorchia in treatment planning, on hormones for achieving testicular descent, and on choices among surgical treatments, including surgical approach (open vs. laparoscopic). We have synthesized evidence in the published literature to address the following Key Questions (KQs) and population, interventions, comparators, outcomes, timing, and settings (PICOTS). KQ1a. For determining a course of treatment, is imaging equivalent to laparoscopy in determining the presence and location of a nonpalpable testicle? KQ1b. In male children with bilateral nonpalpable testicles, does the use of hormonal stimulation testing reduce the need for surgery as part of a treatment plan? KQ2. What is the effectiveness of initial hormonal therapy (human chorionic gonadotropin or luteinizing hormone-releasing hormone) for the treatment of cryptorchidism for outcomes, including but not limited to: Further surgical intervention, The effect on infertility/subfertility, The development of testicular malignancy, The size, location, and function of the testicles. KQ3. What is the effectiveness of surgical therapies (one-stage vs. two-stage, laparoscopic vs. open approach) for the treatment of cryptorchidism for outcomes, including but not limited to: Further surgical intervention , The effect on infertility/subfertility, The development of testicular malignancy, The size, location, and function of the testicles. KQ4. How do the age at presentation, physical presentation of cryptorchidism (unilateral vs. bilateral, palpable vs. nonpalpable, anatomic location), and occurrence of associated abnormalities (e.g., hernia) modify diagnosis, treatment, and outcomes? KQ5. What are the nature and frequency of harms associated with workup or treatment for cryptorchidism?
The Cryptorchid Testis
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Author : Thomas O. Abney
language : en
Publisher: CRC Press
Release Date : 2020-08-11
The Cryptorchid Testis written by Thomas O. Abney and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-11 with Medical categories.
Current knowledge concerning both morphological and functional cryptorchid-related alterations in the various testicular compartments is summarized in this valuable new publication. Damage to the germinal epithelium and resulting infertility in both humans and experimental animals as well as the degree of damage to the different stages of germ cell development is discussed. In addition, information concerning hormonal therapy and orchidopexy to reverse cryptorchid-related damage is provided. Morphological alterations in Sertoli and Leydig cells is discussed in terms of cellular hypertrophy and hyperplasia, alterations in organelle number and characteristics as well as changes in cell-cell junctional complexes. Changes in Sertoli cell and Leydig cell function, including gonadotropin binding, steroidogenesis and other metabolic alterations is also outlined,as well as the influence of altered testicular function on subsequent hypothalamic-pituitary changes. Vascular disruption, the potential role of paracrine substances and direct thermal damage, all of which may be responsible for the resulting detrimental changes in one or more testicular compartments, are considered.
Normal Testicular Descent And The Aetiology Of Cryptorchidism
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Author : John M. Hutson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Normal Testicular Descent And The Aetiology Of Cryptorchidism written by John M. Hutson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
This review describes recent research into the cause of testicular descent and discusses two controversial theories on the mechanism. New animal models of cryptorchidism are described which shed light on the possible aetiology. A brief summary is given of current management, highlighting the controversies of timing of surgery, use of hormone therapy and congenital versus 'acquired' undescended testes. New information about germ cell development in the postnatal testis is changing the way we view treatment and the ultimate prognosis.