Organ vessel with detailed wrinkle (8)

I believe the answer is:

pancreas

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'organ' is the definition.
(pancreas is a kind of organ)

'vessel with detailed wrinkle' is the wordplay.
'vessel with' becomes 'pan' (I can't justify this - if you can you should believe this answer much more).
'detailed' means to remove the last letter (the word must be end-less or 'de-tailed').
'wrinkle' becomes 'crease' (synonyms).
'crease' with its final letter removed is 'creas'.
'pan'+'creas'='PANCREAS'

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(Other definitions for pancreas that I've seen before include "Sweetbread" , "Large gland behind the stomach" , "secreting structure" , "insulin producer" , "It secretes insulin" .)

I've seen this clue in The Telegraph.

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