palisading granuloma

Definition: Palisading granulomas are a subtype of necrotizing granuloma in which the mononuclear phagocytes at the periphery have elongated or spindle-shaped nuclei that are palisaded and arranged roughly parallel to each other and roughly perpendicular to the edge of the central necrotic zone.

The most common are rheumatoid nodules and post-surgical necrobiotic granulomas occurring in the prostate, urinary bladder, and other sites.

Est ulcération They have also been reported in Churg-Strauss disease, foreign body granulomatous reactions, cutaneous T-cell lymphoma, Wegener’s granulomatosis, and a in a variety of infections (non-tuberculous mycobacteriosis, cat scratch disease, phaeohyphomycosis, sporotrichosis, cryptococcosis, coccidioidomycosis, syphilis) cases

Links

 https://granuloma.homestead.com/palisading.html

Digital cases

 JRC:10497 : Granuloma annulare.
 JRC:10498 : Granuloma annulare.
 JRC:10499 : Granuloma annulare.
 HPC:208 (HPC:208) : Granuloma annulare or giant cell angiohistiocytoma?

Variants

 necrobiotic palisading granuloma

Etiology

 rheumatoid nodule
 suture (suture granuloma) (8352376)
 steroids (8067519)
 granuloma annulare
 necrobiosis lipoidica
 actinic granuloma
 scleromyxedema
 eruptive xanthoma
 papulonecrotic tuberculid
 acnitis
 injectable collagen
 aluminium salts
 urate crystals
 cutaneous langerhans histiocytosis
 epithelioid sarcoma

See also

 Granulomas