Sebaceous adenoma of the submandibular gland

Sebaceous adenomas o f sa l ivary gland or igin are ext remely rare tumors, compr i s ing 0.1% of all sa l ivary g land neop lasms and less than 0.5% of sa l ivary adenomas. 1 Cutaneous sebaceous adenomas present as s low-growing painless f i rm masses; they appear predominan t ly during the sixth and seventh decades of l ife 2 as sol i tary les ions o f the face or scalp. 3 Rulon and He lwig 4, in a large s tudy of cutaneous sebaceous neoplasms, repor ted their occurrence main ly on the nose, cheek, or scalp wi th a s low rate o f tumor growth in 80% of cases. His to logica l ly , sebaceous adenomas are ben ign neoplasms bas ica l ly consis t ing o f sebaceous cel ls arranged in nests wi th min ima l a typia or p l e o m o r p h i s m and no tendency to invade local structures. 5 They are typ ica l ly c i rcumscr ibed , and m a y be solid or cystic. 6 Those arising in sa l ivary gland tissue preferent ia l ly affect the paro t id gland. 7 The t rea tment consists of surgery, and no recurrence is obse rved i f they are proper ly excised. 5