Thymic hypoplasia

Thymic hypoplasia
Classification and external resources
Specialty	medical genetics
ICD-10	Q89.2 (note: thymus is classified as endocrine in ICD-10)
ICD-9-CM	759.2
DiseasesDB	34516

Thymic hypoplasia is a condition where the thymus is underdeveloped or involuted.

Calcium levels can be used to distinguish between the following two conditions associated with thymic hypoplasia:

Lymphatic disease: Congenital lymphatic organ disorders (Q89.0/Q89.2, 759.0/759.2)

Thymus	Thymic hypoplasia DiGeorge syndrome Ectopic thymus

Spleen	Congenital asplenia/hyposplenism Asplenia with cardiovascular anomalies Accessory spleen Polysplenia

Hypogammaglobulinemia	X-linked agammaglobulinemia Transient hypogammaglobulinemia of infancy

Dysgammaglobulinemia	IgA deficiency IgG deficiency IgM deficiency Hyper IgM syndrome (1 2 3 4 5) Wiskott-Aldrich syndrome Hyper-IgE syndrome

Other	Common variable immunodeficiency ICF syndrome

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