Ectasia (//), also called ectasis (//), is dilation or distention of a tubular structure, either normal or pathophysiologic but usually the latter (except in atelectasis, where absence of ectasis is the problem).
- Bronchiectasis, chronic dilatation of the bronchi
- Duct ectasia of breast, a dilated milk duct. Duct ectasia syndrome is a synonym for nonpuerperal (unrelated to pregnancy and breastfeeding) mastitis.
- Dural ectasia, dilation of the dural sac surrounding the spinal cord, usually in the very low back.
- Pyelectasis, dilation of a part of the kidney, most frequently seen in prenatal ultrasounds. It usually resolves on its own.
- Rete tubular ectasia, dilation of tubular structures in the testicles. It is usually found in older men.
- Acral arteriolar ectasia
- Corneal ectasia (secondary keratoconus), a bulging of the cornea.
- Vascular ectasias
- Most broadly, any abnormal dilatation of a blood vessel, including aneurysms
- Annuloaortic ectasia, dilation of the aorta. It can be associated with Marfan syndrome.
- Dolichoectasias, weakening of arteries, usually caused by high blood pressure.
- Intracranial dolichoectasias, dilation of arteries inside the head.
- Gastric antral vascular ectasia, dilation of small blood vessels in the last part of the stomach.
- Telangiectasias are small dilated blood vessels found anywhere on the body, but commonly seen on the face around the nose, cheeks, and chin.
- Venous ectasia, dilation of veins or venules, such as:
- "Ectasia." The Free Dictionary. Farlex, Inc., 2009. Web. 6 Nov. 2009. <http://medical-dictionary.thefreedictionary.com/ectasia>
- "Mammary Duct Ectasia. MayoClinic. Mayo Foundation for Medical Education and Research, 2009. Web. 6 Nov. 2009. <http://www.mayoclinic.com/health/mammary-duct-ectasia/DS00751>.
- "Annuloaortic Ectasia." Stanford Hospital & Clinics - Stanford Medicine. Stanford Hospital & Clinics. 2009. Web. 6 Nov. 2009. <http://stanfordhospital.org/clinicsmedServices/COE/heart/ DiseasesConditions/marfan/annuloaorticEctasia.html>.