Etiology, pathogenesis:
Clinical signs:
Pictures
Erythema nodosum:
Erythema nodosum, CLINIC (730)
Erythema nodosum:
Erythema nodosum, CLINIC (731)
Erythema nodosum:
Erythema nodosum, CLINIC (732)
Erythema nodosum:
Erythema nodosum, CLINIC (2916)
Erythema nodosum:
Erythema nodosum, CLINIC (2917)
Erythema nodosum, CLINIC (2918)
Histology:
Inflammation of fibrous septa between fat lobules; variably spreading into the lobules. Lymphocytes and macrophages dominate, neutrophils are often admixtured. Giant cells of foreign body type are located around clefts in collagen. Miescher granuloma is formed by more or less radially arranged macrophages, often around cleft like defects of dermal collagen.
Pictures
Erythema nodosum:
Erythema nodosum, HE 5x (228)
Erythema nodosum, HE 10x (224)
Erythema nodosum, HE 10x (225)
Erythema nodosum, HE 20x (226)
Erythema nodosum, HE 40x (227)
Erythema nodosum, Miescher's granuloma, HE 100x (223)
Erythema nodosum:
Erythema nodosum, HE 60x (10667)
Erythema nodosum, predominantly septal panniculitis with Miescher's granulomas:
Erythema nodosum, HE 60x (12283)
Erythema nodosum:
Erythema nodosum, HE 20x (12047)
Another case:
Erythema nodosum, HE 20x (222)
Another case:
Erythema nodosum, HE 10x (2353)
Erythema nodosum, HE 10x (2354)
Another case:
Erythema nodosum, HE 60x (13772)
Erythema nodosum:
Erythema nodosum, HE 60x (13883)
Erythema nodosum, elastic fibres 60x (13882)
Early erythema nodosum:
Erythema nodosum, HE 20x (3484)
Erythema nodosum, HE 40x (3485)
Early erythema nodosum, another case:
Erythema nodosum, early, HE 40x (5482)
Erythema nodosum in a patient with Crohn's disease:
Erythema nodosum, Crohn's disease, HE 40x (5494)
Erythema nodosum:
Erythema nodosum, HE 20x (5129)
Clinical signs:
Histology:
Panniculitis, usually with neutrophils and often with eosinophils, sometimes foreign substances or oily material can be found within the tissue.
Pictures
Factitial panniculitis:
Artificial panniculitis, HE 2.5x (1531)
Artificial panniculitis, HE 20x (1530)
Panniculitis arteficialis, HE 20x (5221)
Panniculitis, injection depo (i.v. drug user):
Panniculitis, injection depo, iv. drug user, HE 60x (13833)
Panniculitis, injection depo, iv. drug user, HE 20x (13832)
Clinical signs:
Histology:
Calcified arterial walls, calcifications of the fat.
Clinical signs:
Histology:
Subcutaneous infiltrate with lymphocytes, histiocytes, usually with neutrophils and sometimes with eosinophils
Pictures
Panniculitis caused by cold:
Panniculitis caused by cold, HE 2.5x (1535)
Panniculitis caused by cold, HE 20x (1534)
Panniculitis caused by cold, HE 40x (1536)
Clinical signs:
Histology:
Subcutaneous infiltrates containing many eosinophils.
Clinical signs:
Clinical signs:
Histology:
Variable necrosis of the fat, foam cells; inflammation, sometimes with neutrophils; hemorrhage.
Pictures
Panniculitis caused by corticosteroids:
Panniculitis after steroids, HE 40x (6094)
Panniculitis caused by corticosteroids with calcifications:
Steroid panniculitis, HE 20x (5192)
Steroid panniculitis, HE 2.5x (1541)
Steroid panniculitis, HE 20x (1540)
Steroid panniculitis, HE 20x (1539)
Etiology:
Histology:
Areas of subcutaneous enzymatic necroses (loss of structure, ghost cells, eosinophilia of necrotic tissue, irregular shape); surrounded by reactive inflammatory infiltrate with neutrophils. Variable basophilic calcium deposits are present.
Pictures
Pancreatic panniculitis:
Pancreatic panniculitis, HE 40x (2238)
Pancreatic panniculitis, HE 20x (5219)
Pancreatic panniculitis, HE 20x (5220)
Pancreatic panniculitis:
Pancreatic panniculitis, HE 60x (12300)
Pancreatic panniculitis, HE 20x (5382)
Introduction:
Panniculitides are divided into septal (some are accompanied with vasculitis), like erythema nodosum or necrobiosis lipoidica, and lobular, like vasculitis nodularis, subcutaenous sarcoidosis and others.
Clinical signs:
Pictures
Panniculitis, chest:
Panniculitis, CLINIC (857)
Histology:
Inflammation, sometimes granulomatous.
Pictures
Granulomatous panniculitis:
Granulomatous panniculitis, HE 20x (5149)