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Pathologische Befunde am äußeren Genitale/Intersex

Obvious aspects of the external genitalia in disorders of sexual differentiation

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Zusammenfassung

Die Geburt eines Kindes mit uneindeutigem äußeren Genitale stellt für die Eltern eine extreme psychische Belastung dar. Daher ist es wichtig, dass von ärztlicher Seite rasch die richtige Diagnose gestellt wird. Bereits die Inspektion des Genitale kann hier richtungsweisende Hinweise geben. Laborchemische und molekulargenetische Untersuchungen führen in der Regel zur richtigen Diagnose. Obligatorisch ist zudem eine Chromosomenanalyse.

Um sich die unterschiedlichen Erscheinungsformen besser ableiten zu können, geht der Artikel zunächst auf die normale embryologische sexuelle Differenzierung ein. Im Weiteren werden dann die äußeren Aspekte des vermännlichten äußeren Genitale bei chromosomal weiblichem Geschlecht bzw. des verweiblichten Genitale bei chromosomal männlichem Geschlecht beschrieben und Unterschiede herausgestellt. Neben Nennung der wichtigsten Ursachen wird kurz auf die Diagnostik und Therapieplanung eingegangen.

Abstract

Birth of a child with intersexual external genitalia poses a severe psychological burden for the parents. Therefore, it is of utmost importance to find the correct diagnosis quickly. Inspection of the genitalia might already give important hints. Serological and molecular genetic examinations can verify the diagnosis in the majority of cases. Chromosomal analysis is obligatory.

To understand the different appearances of intersexual genitalia, first the normal embryological sexual differentiation is explained in the article. Then the aspects of virilized genitalia in cases of a chromosomal 46,XX child and of female appearing genitalia in cases of a chromosomal 46,XY child are described. Differences are analysed. Besides mentioning the main causes of disorders in sexual differentiation a brief summary of diagnostics and therapeutic considerations is given.

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Krege, S. Pathologische Befunde am äußeren Genitale/Intersex. Urologe 49, 1490–1495 (2010). https://doi.org/10.1007/s00120-010-2405-6

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  • DOI: https://doi.org/10.1007/s00120-010-2405-6

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