Erythema nodosum
LEGEND
Prototype of septal panniculitis
Inflammation at the periphery of the lobule while the center of the lobule remains spared.
Septa between the adipose lobules become thickened until they become fibrotic.
Erythema nodosum
LEGEND
Inflammatory infiltrate localized in the septa
Septa between the adipose lobules become thickened until they become fibrotic
Erythema nodosum
LEGEND
Initially, a septal edema associated with a predominantly neutrophilic infiltrate may be present.
Presence of multinucleated giant cells in the predominantly lymphohistiocytic inflammatory infiltrate at the septal level
Erythema nodosum
LEGEND
- Presence of multinucleated giant cells within the inflammatory infiltrate, predominantly
Erythema nodosum
LEGEND
These are nodular aggregates of epithelioid histiocytes that form multinucleated giant cells and organize around a cleft (the cleft appears as a star-shaped or crescent-shaped fissure).
Miescher granulomas characteristic of EN
Erythema nodosum
LEGEND
Presence of foamy histiocytes within the lymphohistiocytic infiltrate
