Hypoplasia
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Hypoplasia is an incomplete or arrested development of an organ or a part [1]. It is descriptive of many medical conditions such as:
- Underdeveloped breasts during puberty.
- Underdeveloped testes in Klinefelter's syndrome.
- Underdeveloped thymus in DiGeorge syndrome.
- Underdeveloped labia majora in popliteal pterygium syndrome.
- Underdeveloped cerebellum caused by mutation in the Reelin gene.
- Underdeveloped tooth caused by oral pathology, such as Turner's hypoplasia.
- Underdeveloped chambers of the heart in hypoplastic left heart syndrome and hypoplastic right heart syndrome
- Underdeveloped optic nerve in optic nerve hypoplasia
- Underdeveloped sacrum in sacral agenesis
- Underdeveloped facial muscle in asymmetric crying facies
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

