Preposition: of

• outflow: They cause obstruction of salivary outflow typically with pain and swelling at meal times.

• highway: Outcome of protest: Pauline Campbell arrested by Cheshire Constabulary for alleged obstruction of the highway; released without charge.

• airway: The definition of asthma Asthma is an obstruction of the airways occurring to a variable degree; it is a non-infectious disease.

• duct: The most common problem is swelling or infection of glands due to obstruction of salivary ducts.

• intestine: The most common signs and symptoms were abdominal pain and obstruction of the intestine.

Converse of object

• relieve: In the case of advanced colorectal cancer they may be created to relieve obstruction.

• remove: Remove any obvious obstruction in the casualty's mouth.

• cause: Many of the bins stay all day, causing an obstruction.

Adjective modifier

• intestinal: In 1909 Cheadle was operated upon for intestinal obstruction.

• biliary: Treatment - Palliative surgery may relieve the biliary obstruction in carcinoma of the head of the pancreas.

• nasal: The drug also had a beneficial effect on nasal obstruction in the latter part of the study.

• ureteric: The management of bilateral ureteric obstruction and renal failure in advanced prostate cancer.

• urinary: For example, urinary tract obstruction, can be treated to save renal function.

• prostatic: BPH is a non-malignant disease of the prostate which may lead to gland enlargement that can cause prostatic obstruction.

Noun used with modifier

• airway: Sleep related upper airway obstruction in a cohort with Down's syndrome.

• outflow: He had had mild symptoms of bladder outflow obstruction for one year prior to presentation.

• airflow: What advice can you give for use of beta blockade in patients with airflow obstruction?

• vena: Abner A: Approach to the patient who presents with superior vena cava obstruction.

• bowel: Mid or high small bowel obstruction presents a different picture.

• caval: Superior vena caval obstruction often arises acutely and should be treated as an emergency.