char = O;code = 79 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = p;code = 112 char = i;code = 105 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = :;code = 58 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = y;code = 121 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 7;code = 55 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = .;code = 46 result sql = Oral postinflammatory pigmentation: an analysis of 7 cases.
Oral postinflammatory pigmentation: an analysis of 7 cases.char = O;code = 79 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = p;code = 112 char = i;code = 105 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = O;code = 79 char = P;code = 80 char = P;code = 80 char = );code = 41 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = c;code = 99 char = o;code = 111 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = m;code = 109 char = u;code = 117 char = c;code = 99 char = o;code = 111 char = s;code = 115 char = a;code = 97 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = c;code = 99 char = e;code = 101 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = a;code = 97 char = s;code = 115 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = y;code = 121 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = p;code = 112 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = l;code = 108 char = i;code = 105 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = n;code = 110 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = s;code = 115 char = s;code = 115 char = u;code = 117 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = c;code = 99 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = ,;code = 44 char = ;code = 32 char = i;code = 105 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = v;code = 118 char = i;code = 105 char = o;code = 111 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = i;code = 105 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = c;code = 99 char = e;code = 101 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = m;code = 109 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = m;code = 109 char = u;code = 117 char = c;code = 99 char = o;code = 111 char = s;code = 115 char = a;code = 97 char = .;code = 46 char = ;code = 32 char = C;code = 67 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = O;code = 79 char = P;code = 80 char = P;code = 80 char = ;code = 32 char = a;code = 97 char = p;code = 112 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = l;code = 108 char = o;code = 111 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = z;code = 122 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ,;code = 44 char = ;code = 32 char = b;code = 98 char = l;code = 108 char = a;code = 97 char = c;code = 99 char = k;code = 107 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = b;code = 98 char = r;code = 114 char = o;code = 111 char = w;code = 119 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = i;code = 105 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = .;code = 46 char = ;code = 32 char = O;code = 79 char = P;code = 80 char = P;code = 80 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = y;code = 121 char = ;code = 32 char = y;code = 121 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = u;code = 117 char = g;code = 103 char = h;code = 104 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = a;code = 97 char = p;code = 112 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = i;code = 105 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = o;code = 111 char = r;code = 114 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = v;code = 118 char = i;code = 105 char = e;code = 101 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = o;code = 111 char = r;code = 114 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = o;code = 111 char = p;code = 112 char = s;code = 115 char = y;code = 121 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 7;code = 55 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = O;code = 79 char = P;code = 80 char = P;code = 80 char = .;code = 46 char = ;code = 32 char = F;code = 70 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = n;code = 110 char = u;code = 117 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = w;code = 119 char = o;code = 111 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = r;code = 114 char = u;code = 117 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = u;code = 117 char = k;code = 107 char = o;code = 111 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = k;code = 107 char = i;code = 105 char = a;code = 97 char = .;code = 46 char = ;code = 32 char = D;code = 68 char = e;code = 101 char = s;code = 115 char = p;code = 112 char = i;code = 105 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = s;code = 115 char = i;code = 105 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = O;code = 79 char = P;code = 80 char = P;code = 80 char = ,;code = 44 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = f;code = 102 char = e;code = 101 char = w;code = 119 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = o;code = 111 char = r;code = 114 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = a;code = 97 char = g;code = 103 char = n;code = 110 char = o;code = 111 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = g;code = 103 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = f;code = 102 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = u;code = 117 char = b;code = 98 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = h;code = 104 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = s;code = 115 char = o;code = 111 char = ;code = 32 char = f;code = 102 char = a;code = 97 char = r;code = 114 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = Oral postinflammatory pigmentation (OPP) is a discoloration of the oral mucosa caused by an excess of melanin production and deposition within the basal layer of the epithelium and connective tissue of areas affected by chronic inflammation. Therefore, it is mandatory to demonstrate the association with a previous or concomitant inflammatory process in the same area of oral mucosa. Clinically OPP appears as a localized or diffuse, black to brown pigmentation. OPP may persist for many years even though the disappearing of the pigmentation after the resolution of the inflammatory state has been reported. We reviewed retrospectively the medical records and, when performed, biopsy examinations of 7 cases of OPP. Four cases were associated with oral lichen planus, two cases with lichenoid lesions and one case with proliferative verrucous leukoplakia. Despite a possible high prevalence of OPP, only a few reports concerning diagnosis, etiopathogenesis and clinical manifestation have been published so far.
Publication: Med Oral Patol Oral Cir Bucal 2011 Jan ;16(1)::e11-4.
Publication Date: 2011 Jan
Study Author(s): Mergoni, Giovanni;Ergun, Sertan;Vescovi, Paolo;Mete, Özgür;Tanyeri, Hakkı;Meleti, Marco;
Institution: Department of Otolaryngological/Dental/Ophthalmological and Cervico-Facial Sciences, University of Parma, Italy.
Shortcut link to this study:
Oral postinflammatory pigmentation (OPP) is a discoloration of the oral mucosa caused by an excess of melanin production and deposition within the basal layer of the epithelium and connective tissue of areas affected by chronic inflammation. Therefore, it is mandatory to demonstrate the association with a previous or concomitant inflammatory process in the same area of oral mucosa. Clinically OPP appears as a localized or diffuse, black to brown pigmentation. OPP may persist for many years even though the disappearing of the pigmentation after the resolution of the inflammatory state has been reported. We reviewed retrospectively the medical records and, when performed, biopsy examinations of 7 cases of OPP. Four cases were associated with oral lichen planus, two cases with lichenoid lesions and one case with proliferative verrucous leukoplakia. Despite a possible high prevalence of OPP, only a few reports concerning diagnosis, etiopathogenesis and clinical manifestation have been published so far.
PMID: 20526252