Macular amyloidosis is a pruritic eruption that is variable in severity and consists of small, dusky-brown or grayish pigmented macules. Macular amyloidosis (MA) is the most subtle form of cutaneous amyloidosis, characterized by brownish macules in a rippled pattern, distributed predominantly. CASE REPORT. An unusual presentation of macular amyloidosis. Bárbara Lima Araújo MeloI; Igor Santos CostaII; Clara de Assis Martins GoesIII; Celina Aguiar.

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Palitz LL, Peck S. There is some evidence in the literature that macular amyloidosis is more common in women who are between the ages of 20 to 50 years. Amyloidosis can affect different organs in different people, and there are different types of amyloid.

Histopathology of primary cutaneous amyloidoses and systemic amyloidosis. Histochemistry and electron microscopy. The specific cause of your condition depends on the type of amyloidosis you have. Straight non branching amyloid filaments with a diameter of 6 – 10 macylar showing a hollow core on cross section Infra red microscopy reveals a beta—pleated antiparallel configuration.

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An unusual presentation of macular amyloidosis

The observation about the role of friction could not be conclusively supported or negated. No sponsor or advertiser has participated in, approved or paid for the content provided by Decision Support in Medicine LLC. Apart from the considerable cosmetic disability, patients occasionally complain of troublesome pruritus.

Systemic therapies such as retinoids, cyclophosphamide, and cyclosporine have been shown to reduce pruritus and promote clearance of lesions but have more associated side effects. Representative biopsy of macular or lichen amyloid. A year-old, dark-skinned housewife was followed up after presenting with a one-year complaint amilojdosis dark, non-itching lesions on her arms, neck, lower amiloisosis and legs.


A Clinico-Epidemiological Study of Macular Amyloidosis from North India

It is achieved by direct intradermal injection of these antiamyloid antibodies. Kobayashi H, Hashimoto K.

Identification of gammaglobulins and C3 in the lesions by immunofluorescence. Macular amyloidosis is a form of cutaneous amyloidosis characterized by dusky-brown lesions usually located on the upper back between the shoulder blades. An overview of amyloidsosis. Mc Graw Hill Inc; Report of a long-term study. International Myeloma Working Group updated criteria for the diagnosis of multiple myeloma.

See your doctor if you persistently experience any of the signs or symptoms associated with amyloidosis. The parameters collected and collated by us on this chronic, persistent and cosmetically disfiguring disease support the findings of the previous workers in relation to adult age of onset, preponderance of female sex, earlier onset in women and more frequent involvement of upper back and extensors of arms and the presence of symptoms of itching.

Patients and family members should be informed about the chronicity of the disease and the potential for trying multiple therapies before resolution of symptoms. This article has been cited by other articles in PMC. Histopathology is not specific and amyloid deposits can be demonstrated only in a small number of patients.

Macular Amyloidosis (Friction Amhyloidosis)

Congo Red staining left and Thioflavin-T staining with fluorescent microscopy right. There are no clear guidelines for monitoring therapy for patients with macular amyloidosis.

The treatment for both macular amyloidosis and lichen amyloidosis tends to be grouped together in the literature with no uniformly effective therapy for these patients. Amloidosis risk factors such as, race,[ 28 ] female gender,[ 3610 ] genetic predisposition,[ 13 ] sun exposure,[ 12 ] atopy[ 14 ] and amikoidosis 1215 — 17 ] have been implicated in the etiopathogenesis of MA.


Onset is typically during puberty, and the maculaar has an equal distribution between the sexes 2. Unusual Clinical Scenarios to Consider in Patient Management There is an unclear link between primary localized cutaneous amyloidoses and a variety of immune disorders including systemic sclerosis, CREST syndrome, rheumatoid arhritis, systemic lupus erythematosus, primary biliary cirrhosis, autoimmune cholangitis, Kimura disease, ankylosing spondylitis, autoimmune thyroiditis, IgA nephropathy, and sarcoidosis.

These changes did not always correlate with the deposition of amyloid and extended well beyond the areas of amyloid deposits. Treatment of Immunoglobulin Light Chain Amyloidosis: There is an unclear link between primary localized cutaneous macu,ar and a variety of immune disorders including systemic sclerosis, CREST syndrome, amiloidosia arhritis, systemic lupus erythematosus, primary biliary amiloidosks, autoimmune cholangitis, Kimura disease, ankylosing spondylitis, autoimmune thyroiditis, IgA nephropathy, and sarcoidosis.

On viewing, the Congo red-stained sections under polarized light, amyloid deposits with apple green birefringence were detected in seven biopsy specimens [ Figure 4 ]. Indian J Dermatol Venerol Leprol. There was mild hyperkeratosis of the epidermis in three You may not experience signs and symptoms of amyloidosis until the condition is advanced.

Occasionally, MA and lichen amyloidosis may coexist in the same patient, a condition known as biphasic amyloidosis. Nylon cloth macular amyloidosis.

Fifty patients with a clinical diagnosis of MA attending the out-patient clinic of a tertiary care dermatology center were enrolled in the study.