... with polyangiitis; ANCA = antineutrophilic cytoplasmic autoantibody; GBM = glomerular basement membrane; EGPA = eosinophilic GPA; MPGN = membranoproliferative glomerulonephritis; PAN = polyarteritis nodosa. Table 30-2 VASCULITIDES CLASSIFIED BY ORGAN SITE Site Histologic Type Associations Temporal...

... generally follow similar protocols for those established in other systemic vasculitides (see chapter 30 ). This typically involves some level of immunosuppression with glucocorticoids and/or other immunomodulatory therapies (e.g., methotrexate, interferon). Microscopic Findings. The histologic findings...

... and vasculitides  H. Lipomatous pseudohypertrophy  I. Lymphoepithelial cyst  J. Nodular lymphoid hyperplasia  K. Pseudocyst  L. Retention cyst  M. Simple mucinous cyst  N. Epidermoid cyst in intrapancreatic heterotopic spleen  O. Squamoid cyst  P. Acinar cystic transformation  Q...

... by diathermy, possibly related to altered collagen ( 381 ). The clinical history and absence of organisms by special stains or culture help support the diagnosis. Granulomatous Vasculitis. Granulomatous vasculitides, such as granulomatosis with polyangiitis (formerly known as Wegener granulomatosis), rarely...

...   1970 ; 104 : 604 - 7 . 39. Hourihane   DO . Infected infarcts of the testis: a study of 18 cases preceded by pyogenic epididymoorchitis . J Clin Pathol   1970 ; 23 : 668 - 75 . 40. Levine   TS . Testicular and epididymal vasculitides. Is morphology a help in classification...

... organs: transmural fibrinoid necrosis with neutrophils involving arteries from 100 to 400 μg ( 99 ). Complications of hepatic involvement by PAN include infarcts, lobar atrophy, ischemic cholangitis, and hemobilia due to ruptured intrahepatic aneurysm ( 100 ). Other vasculitides reported in the liver...

... with polyangiitis shows a predilection for middle-aged adults. Patients typically have a several-year history of allergic rhinitis, nasal polyposis, and asthma, and may also have involvement of the skin, heart, nervous system, and kidneys ( 137 ). Pathogenesis. All of the ANCA-associated vasculitides...

... of distant or systemic infection by a wide variety of infectious agents, including fungi, mycobacteria, bacteria, and spirochetes ( 78 ), resulting in acute or chronic hypophysitis with occasional abscess formation. Other causes of secondary hypophysitis include sarcoidosis ( 79 , 80 ), vasculitides...