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The medical information on this site is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes. This information is not intended to be patient education, does not create any patient-physician relationship, and should not be used as a substitute for professional diagnosis and treatment.
Anorchia
AnorchidismEmbryonic Testicular Regression SyndromeAbsence of the testes, congenital or acquired
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Overview
The testicular regression syndrome (TRS) was delineated by {14:Sarto and Opitz (1973)}, who called it the XY gonadal dysgenesis syndrome. It is characterized primarily by the absence of gonads in an XY person. In most cases, uterus and fallopian tubes are absent but small tubular structures interpreted as mullerian or wolffian rudiments (or both) are present. The range of virilizing effects due to early testicular tissue extends from none in phenotypic females with only slightly hypoplastic normal external genitalia, well-formed but hypoplastic uterus, and well-formed tubes ({4:De Marchi et al., 1981}) to the anorchic phenotypic male ({5:Edman et al., 1977}). Most affected individuals lack a vagina but a urogenital sinus or pseudovaginal urethral outpouching is found. Partial labioscrotal fusion and clitoris enlargement are common, breast development is absent, and postpubertal eunuchoid habitus is the rule. Sometimes nongenital anomalies are present (summary by {13:Rosenberg et al., 1984}). Source: Online Mendelian Inheritance in Man
Trusted Medical Sites
Genetic & Rare Diseases Information Center (GARD)
GARD provides the public with access to current, reliable, and easy-to-understand information about rare or genetic diseases in English or Spanish.
Support Organizations
Support organizations can provide help and guidance in areas such as peer matching, education and training, and therapy and counseling.
Disease Resources
Resources can help guide your quest for factual and reliable information.
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The Progeria Handbook; A Guide for Families and Health Care Providers of Children with Progeria.
This 100-page handbook helps answer many questions for children with Progeria about how to optimize quality of life through daily care and medical treatment. Contains basic health facts,daily care recommendations and extensive treatment guidelines.
AAMDSIF Online Academy (webinars)
200+ FREE webinars for patients, families and caregivers about rare blood cancers and bone marrow failure diseases.
Educational Resources
Publications, links to patient conferences and webinars
Disease Information
Descriptions of various rare blood cancers and bone marrow failure diseases.