Carta científico-clínica. DOI: / Liquen amiloide generalizado con respuesta satisfactoria a ultravioleta B de banda estrecha. Satisfactory. PubMed. 9. Mascaró JM. Liquen amiloide del pabellón auricular (case 11). Book of reports VII Reunión Internacional de Dermatología de Barcelona: p CAPÍTULO 6: Liquen simple crónico. Sections ++. Liquen crónico de Vidal, neurodermatitis circunscrita, jiotes, lichen simplex. ++ ), liquen amiloide ( fig.

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Dermatology Online Journal

Lichen amyloidosis occurs primarily on the shins, although other mainly acral sites lquen be involved. The documents contained in this web site are presented for information purposes only.

The term amyloid was reportedly coined by the famous 19th century pathologist Virchow who attributed its major constituent to carbohydrate accumulation [ 1 ].

In both patients punch biopsies from the conchal bowl yielded a pauci-inflammatory specimen with orthohyperkeratosis and acanthosis Fig. Primary localized cutaneous amyloidosis is, by definition, amyloid deposition limited to the skin and not associated with underlying systemic illness.

The finding of the auricular concha as a site involved in biphasic amyloidosis is of interest, and further supports the theory of lichen and macular amyloidosis as falling on differing ends of the same disease spectrum. The pale amorphous material in the papillary dermis appears globular, suggestive of amyloid. Analogous to hyperkeratotic lichen planus seen on the shins, lichen amyloidosis can be thought of as hyperkeratotic primary cutaneous amyloidosis.

Head and neck involvement in systemic amyloid is common. Hematoxylin and eosin stain; Mag: Higher magnification of Fig. Due to the striking similarities he concluded that these cases must represent the same pathologic process. Under polarized light microscopy, amyloid stained with Congo red assumes apple-green birefringence. Physical examination revealed a rippled hyperpigmented rectangular plaque on the upper back, as well as monomorphous shiny brown mm papules in the conchal bowl and on the scapha of the right ear Fig.


Previous article Next article. A family history but not personal history of eczema was noted. Scanning magnification of an auricular papule shown in Fig.

Liquen amiloide en las piernas | Piel. Formación continuada en dermatología

Subscriber If you already have your login data, please click here. The auricular concha is a recognized although unusual site for lichen amyloidosis, and here two additional cases are reported. All articles are subjected to a rigorous process of revision in pairs, and careful editing for literary and scientific style.

Monomorphous shiny brown mm papules in the conchal bowl and on the scapha of the right ear of patient 2 Figure 4: Are you a health professional able to prescribe or dispense drugs? Print Send to a friend Export reference Mendeley Statistics. Histopathologically, these two entities appear to be quite similar and occur as amorphous pink globules in the papillary dermis.

The globules in Fig. July – August Pages The high prevalence of biphasic amyloidosis supports the notion that lichen amyloidosis and macular amyloidosis are likely different manifestations of the same underlying pathologic process.

Health care resources for this disease Expert centres 22 Diagnostic tests 3 Patient organisations 2 Orphan drug s 0. Physical exam was remarkable for bilateral, symmetrical brown scaly mm monomorphous papules mainly on the conchal bowls Fig. SRJ is a prestige metric based on the idea that not all citations are the same. CiteScore measures average citations received per document published.

Continuing navigation will be considered as acceptance of this use. Acanthosis and a pauci-inflammatory infiltrate are also present.

If you are a member of the AEDV: Additional information Further information on this lisuen Classification s 1 Gene s 0 Clinical signs and symptoms Publications in PubMed Other website s 8. Check this box if you wish to receive a copy of your message. SNIP measures contextual citation impact by wighting citations based on the total number of citations in a subject field.

Two cases of lichen amyloidosis of the auricular concha are presented here, supplementing the already approximately twenty cases of lichen amyloidosis of the auricular concha reported to date. Si continua navegando, consideramos que acepta su uso.


SRJ is a prestige metric based on the idea that not all citations are the same. The clinical amiloidr was discoid lupus erythematosus, and a biopsy sample was taken. The two major forms of primary localized cutaneous amyloidosis are lichen amyloidosis and macular amyloidosis.

Review of systems was unremarkable and negative for alopecia, arthralgia, oral sores, and photosensitivity. November Pages Pemphigus Vegetans in the Inguinal Folds. Show more Show less. On electron microscopy amyloid appears as haphazard and wavy nm non-branching filaments. Lichen ilquen is a rare chronic form of cutaneous amyloidosis see this terma skin disease characterized by the accumulation of amyloid deposits in the dermis, clinically characterized by the development of pruritic, often pigmented, hyperkeratotic papules on trunk and extremities, especially on the shins, and histologically by the deposition of amyloid or amyloid-like proteins in the papillary dermis.

Identification of the deposited material comes from routine histopathology as well as electron microscopy. Bakos [ 6 ] described a case of papules of the ear that stained positive with Congo Red and were associated with widespread truncal primary cutaneous amyloidosis.

Other authors have proposed that lichen amyloidosis and macular amyloidosis lie along the amillide spectrum, and that intermediate forms exist [ 15 ]. Not surprisingly, the site predilection of lichen amyloidosis corresponds to areas of the body that are prone to rubbing, whereas the site amiloids of macular amyloidosis corresponds to areas of the body that are relatively inaccessible.

Combined cases of lichen and macular amyloidosis are termed biphasic amyloidosis, and provide support to the theory that these two variants of amyloidosis exist on the same disease spectrum.