AL amyloidosis - Oral Mucosal Lesion
Amyloid deposits in AL amyloidosis are composed of immunoglobulin light chains. Monoclonal proteins or Bence Jones proteins are usually detected.
Systemic findings can be related to the involvement of the heart, muscles, gastrointestinal tract, kidneys, and nerves. Symptoms may include fatigue, weight loss, paresthesia, syncope, and shortness of breath. Cardiac involvement may present as syncope, angina, or symptoms of heart failure. Low ECG voltages may develop as a consequence of restrictive cardiomyopathy. Renal involvement with nephrotic syndrome is the most common presentation of immunoglobulin amyloidosis. Neurologic symptoms include a sensory peripheral neuropathy, presenting in a stocking and glove distribution. An "idiopathic" carpal tunnel syndrome can also occur. Gastrointestinal involvement is variable and may present with hemorrhage, changes in bowel movements, and dyspepsia.
Amyloid infiltration of skeletal muscle can result in pseudohypertrophy, classically involving the tongue and leading to macroglossia.
Mucocutaneous lesions can be seen in 30%-40% of patients with AL amyloidosis and may present before systemic involvement is apparent, providing an early clue to diagnosis.
Abnormal bleeding and/or abnormal bleeding tests are seen in approximately 30%-50% of patients with amyloidosis.
E85.81 – Light chain (AL) amyloidosis
23132008 – AL amyloidosis
- AA amyloidosis
- Age-related amyloidosis (wild type transthyretin amyloidosis)
- Familial (hereditary) amyloidosis
- Light chain deposition disease
- Light and heavy chain deposition disease
- Heavy chain deposition disease
- Nodular or localized cutaneous amyloidosis
- Lichen amyloidosis
- Lipoid proteinosis
- Colloid milium
- Lepromatous leprosy
- Diffuse cutaneous mastocytosis
- Solar purpura
- Traumatic purpura
- Purpura secondary to aspirin or over-anticoagulation (see drug-induced nonpalpable purpura)
- Battle sign (see traumatic purpura)
- Small vessel vasculitis
- Retiform purpura