“…In contrast, primary LMS of the oral cavity is exceedingly rare, a finding attributed to the general paucity of smooth muscle in this location 9 . There have been about 65 cases reported in the English literature since 1950, often as individual case studies [1][2][3][4][5][7][8][9][10][12][13][14][16][17][18][19][20][21][22][23][24][25][26][27][28][30][31][32][33][34][35][36][37][38][39][40]42,43,45,47 . Diagnosis of these lesions can be difficult on routine histology alone, and earlier reports were frequently diagnosed without immunohistochemical confirmation [1][2][3]9,13,17,19,…”