A<unk> is a soft, non-cancerous growth resulting from the tertiary stage of syphilis. It is a form of granuloma.<unk>  are most commonly found in the liver<unk> hepatis), but can also be found in brain, heart, skin, bone, testis, and other tissues, leading to a variety of potential problems including neurological disorders or heart valve disease.
Syphilitic<unk>  are found in most but not all cases of tertiary syphilis, and can occur either singly or in groups. <unk>  have a firm center that may become partly hyalinized.  These central regions begin to die through coagulative necrosis, though they also retain some of the structural characteristics of previously normal tissues, enabling a distinction from the granulomas of tuberculosis where caseous necrosis obliterates preexisting structures.  Other histological features of<unk>  include an intervening zone containing epithelioid cells with indistinct borders and multinucleated giant cells, and a peripheral zone of fibroblasts and capillaries.  Inflitration of lymphocytes and plasma cells can be seen in the peripheral zone as well.  With time,<unk>  eventually undergo fibrous degeneration, leaving behind an irregular scar or a round, fibrous nodule.
Gumma 
Orbit 
Buccal mucosa
Hymen
Duct 
Olea
Atom
Aura 