Although there is no pathognomonic finding to differentiate a sarcoidal granuloma
from a granuloma of another cause, some features favor a granuloma being sarcoidal.
These are Tuberculous granulomas, Lepromatous granulomas, Foreign Body granulomas, Necrobiotic granulomas, Suppurative granulomas, Sarcoidal granulomas
and Xanthgranulomas/ malakoplakia.
A biopsy from the right side of his nose demonstrated sarcoidal granulomas.
It is not clear why sarcoidal granulomas occur in tattoos.
4 Rare tattoo following complications include allergic reaction, phototoxicity, pseudolymphomatous reaction, tattoo immunologic rejection, discoid lupus erythematosus, primer inoculation tuberculosis, sarcoidal granulomas
, and psoriasis.
Cutaneous sarcoidal granulomas
and the development of systemic sarcoidosis.
A tuberculoid granulomatous infiltrate is most helpful, but some patients may instead have a lymphohistiocytic infiltrate, palisading or sarcoidal granulomas
, a mixed inflammatory infiltrate, or other nonspecific findings.
Less frequent reactions at injection sites include vascular thrombosis, mucinosis, dermal and SC sclerosis, necrosis, ulceration and rarely, lupus erythematosus-like lesions, sarcoidal granulomas
, erythema nodosum, an acute septal panniculitis with neutrophils, lobular lymphocytic panniculitis and lipoatrophy.