Meiyu and Oliver discussed the following issue on 9/7/2015:
There may need to be a term called stenosis AE.
https://en.wikipedia.org/wiki/Stenosis
Also: obstruction AE?
http://medical-dictionary.thefreedictionary.com/obstruction
Also: perforation AE?
http://medical-dictionary.thefreedictionary.com/perforation
However, it appears hard to locate where such general medical terms should be located in OAE.
MedDRA puts obstruction under "General signs and symptoms NEC":
http://purl.bioontology.org/ontology/MEDDRA/10018072
However, a term caleld ""General signs and symptoms NEC" does not make much sense in ontology.
We will need to discuss this issue in the future.