Granulomatosis with polyangiitis

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Granulomatosis with polyangiitis, abbreviated GPA, is a type of vasculitis that typically afflicts the lungs and kidneys.

It was previously known as Wegener granulomatosis, abbreviated WG.

General

  • Autoimmune.

Clinical

Serology:

Notes:

Microscopic

Features:

  • Small vessel vasculitis:
    1. Inflammatory cells within the vessel wall.
      • Granulomas - typically poorly formed.[3]
        • Multinucleated giant cells - common. (???)
    2. Vessel wall injury.

Notes:

  • In the lung, the granulomas tend to be centrilobular, as the artery travels with the airway and is centrilobular.
    • It may difficult to find small blood vessels in affected portions of lung.

Images

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See also

References

  1. Yeung, J.C.; Leonard, Blair J. N. (2005). The Toronto Notes 2005 - Review for the MCCQE and Comprehensive Medical Reference (2005 ed.). The Toronto Notes Inc. for Medical Students Inc.. pp. RH6. ISBN 978-0968592854.
  2. Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease (7th ed.). St. Louis, Mo: Elsevier Saunders. pp. 745. ISBN 0-7216-0187-1.
  3. Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease (7th ed.). St. Louis, Mo: Elsevier Saunders. pp. 747. ISBN 0-7216-0187-1.