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barrett's esophagus metaplasia

Discussion in 'Medical Students - MD' started by dinesh, Dec 7, 2005.

  1. dinesh

    dinesh Senior Member
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    Would Barretts be described as Columnar metaplasia, or squamos metaplasia?

    I know that the strat squamous is replaced by simple columnar , but how is the terminology used?
     
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  3. modisrules

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    Pocket Robbins (6th Ed., pg 400), says "Barrett esophagus refers to the replacement of the distal esophageal squamous epithelium by a metaplastic columnar epithelium, in response to prolonged injury."

    I know it doesn't really answer the question, but I think the use of metaplasia by definition (because it is replacement of one tissue type by another) requires description of using two tissue types. So your answer would be, "squamous to columnar metaplasia" or "metaplasia of squamous by columnar." I would doubt that you'll see it using one of the examples you provided (i.e. on exams, boards, texts).
     
  4. dinesh

    dinesh Senior Member
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    A MCQ block exam past paper had the choices as
    Columnar Metaplasia
    Squamos Metaplasia

    So I really wasn't sure.
     
  5. medgirl20

    medgirl20 Senior Member
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    I'd say Barretts oesophagus is columnar metaplasia. it just seems to make sense to me that the thing it is changing to is the name but that's just a gut feeling. Wouldn't worry about it though
     
  6. Arsenic

    Arsenic posting from the future
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    columnar metaplasia

    pg.241, BRS Path 2nd edition
     
  7. trudub

    trudub Senior Member
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    Yeah, definitely columnar metaplasia. The other thing you will hear is intestinal metaplasia. The cells in the esophagus now resemble cells now resemble cells from the intestine.
     
  8. Rendar5

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    metaplasia's named by whatever the new cell-type is. whether it's squamous metaplasia of respiratory tissue, apocrine metaplasia of breast ducts, or the columnar metaplasia everyone just mentioned.
     
  9. GtownCobra

    GtownCobra Junior Member
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    this is total minutia
     
  10. THP

    THP Senior Member
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    Actually, its not. This is important.
     
  11. Rendar5

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    when u get a board question requiring this info, just write to them complaining about including pathology minutia on the test.
     
  12. dinesh

    dinesh Senior Member
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    Thanks guys.
    I was a bit confused with regard to the terminology.
     
  13. GtownCobra

    GtownCobra Junior Member
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    i already took step 1.... i don't remember seeing this crap
     

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