What is the Difference Between Agenesis and Atresia?
🆚 Go to Comparative Table 🆚The main difference between agenesis and atresia lies in the nature of the abnormalities they describe:
- Agenesis refers to the complete absence of an anatomical structure, including its primordial precursors, due to the failure of an organ to develop during embryonic development. For example, vaginal agenesis is a condition where the Müllerian ducts do not fuse to form the upper part of the vagina.
- Atresia refers to the absence, underdevelopment, or abnormal closure of a normal anatomical tubular structure or opening. For example, vaginal atresia is a condition where the lower portion of the vagina has not formed, resulting in a blockage.
In summary, agenesis is the failure of an organ to form properly during embryonic development due to the absence of primordial tissue, while atresia is the absence or closure of a normal opening in a tubular body part.
Comparative Table: Agenesis vs Atresia
Agenesis and atresia are two different birth defects that can affect the development of organs and body parts. Here is a table summarizing the differences between the two:
Feature | Agenesis | Atresia |
---|---|---|
Definition | Agenesis refers to the failure of an organ to develop during embryonic development due to the absence of primordial tissue. | Atresia refers to the missing normal opening of a body part that is tubular in nature. |
Examples | Agenesis of corpus callosum (failure of the corpus callosum to develop), renal agenesis (failure of both kidneys to develop). | Vaginal atresia (absence or closure of the normal opening of the vagina). |
Presentation | Complete absence of an anatomical structure together with its primordial. | Absence, underdevelopment, or abnormal development of a tubular structure. |
Both agenesis and atresia are congenital anomalies, but they differ in the development of the affected organs or body parts. Agenesis occurs when an organ fails to develop, while atresia is characterized by the absence or closure of a normal opening in a tubular structure.
- Atresia vs Stenosis
- Androgen Insensitivity Syndrome vs Mullerian Agenesis
- Acrania vs Anencephaly
- Exencephaly vs Anencephaly
- Atrophy vs Dystrophy
- Anencephaly vs Microcephaly
- Congenital Adrenal Hyperplasia vs Hypoplasia
- Abortion vs Miscarriage
- Male vs Female Fetus
- Neoteny vs Progenesis
- Achondroplasia vs Hypochondroplasia
- Metaplasia vs Dysplasia
- Embryo vs Fetus
- Histogenesis vs Morphogenesis
- Dilated vs Effaced
- Achondroplasia vs Pseudoachondroplasia
- Neurulation vs Gastrulation
- Gametogenesis vs Embryogenesis
- Differentiation vs Morphogenesis