| 释义 |
- Specific conditions
- References
Ectasia ({{IPAc-en|ɛ|k|ˈ|t|eɪ|ʒ|ə}}), also called ectasis ({{IPAc-en|ˈ|ɛ|k|t|ə|s|ᵻ|s}}), is dilation or distention of a tubular structure,[1] either normal or pathophysiologic, but usually the latter (except in atelectasis, where absence of ectasis is the problem). Specific conditions- 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)[2] 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.[3]
- 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:
- Chronic venous insufficiency, often in the leg
- Jugular vein ectasia, in the jugular veins returning blood from the head
References 1. ^"Ectasia." The Free Dictionary. Farlex, Inc., 2009. Web. 6 Nov. 2009.
2. ^"Mammary Duct Ectasia. MayoClinic. Mayo Foundation for Medical Education and Research, 2009. Web. 6 Nov. 2009. .
3. ^"Annuloaortic Ectasia." Stanford Hospital & Clinics - Stanford Medicine. Stanford Hospital & Clinics. 2009. Web. 6 Nov. 2009. .
2 : Anatomy|Pathophysiology |