Abnormal narrowing of a body canal Tess, is no problem (8)

I believe the answer is:

stenosis

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'abnormal narrowing of a body canal' is the definition.
I can't judge whether this definition defines the answer.

'tess is no problem' is the wordplay.
'problem' indicates an anagram.
'tess'+'is'+'no'='tessisno'
'tessisno' with letters rearranged gives 'STENOSIS'.

Can you help me to learn more?

(Other definitions for stenosis that I've seen before include "Being unable to go" , "The abnormal narrowing of a passage in the body" , "problem in passageway" , "The narrowing of a bodily passage" .)

I've seen this clue in the Sydney Morning Herald.

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