Interstitial granuloma annulare – low magnification
LEGEND
Presence of mucin, in a smaller amount than in the classic form.
Perivascular lymphoplasmacytic infiltrate.
Normal epidermis.
In the interstitial form, a dermal infiltrate of histiocytes is observed between collagen fibers. This can be subtle in early stages.
Interstitial granuloma annulare – low magnification
LEGEND
Minimal and poorly defined necrobiosis compared to the classic form
Dermal infiltrate of histiocytes between collagen fibers
Interstitial granuloma annulare
LEGEND
Another classic example
Mild mucin and minimal necrobiosis
Perivascular lymphoplasmacytic infiltrate
Dermal infiltrate of histiocytes between collagen fibers
