249 Case report Bilateral periorbital ecchymoses An often missed sign of amyloid purpura G. Colucci1; L. Alberio1, 2; F. Demarmels Biasiutti1; B. Lämmle1, 3 1Department of Haematology and Central Haematology Laboratory, Inselspital, University Hospital and University of Bern, Switzerland; 2Service of Haematology and Central Haematology Laboratory, CHUV, University Hospital of Lausanne, Switzerland; 3Center for Thrombosis and Haemostasis, University Medical Center, Mainz, Germany Keywords Immunoglobulin light chain amyloidosis, multiple myeloma, amyloid purpura, raccoon eyes Summary Immunoglobulin light chain (AL) amyloidosis is a systemic disease caused by a plasma cell clone synthesizing an unstable light chain, which forms amyloid fibrils. Deposition of amyloid fibrils affects primarily kidney, heart, nervous system, spleen, liver, gastrointestinal tract and the skin. Skin bleeding in these patients is called amyloid purpura. Classically, it occurs spontaneously and bilaterally in the periorbital region. Vessel wall fragility and damage by amyloid are the principal causes of periorbital and gastrointestinal bleeding. Additionally, coagulation factor inhibitory circulating paraprotein, hyperfibrinolysis, platelet dysfunction or isolated acquired factor X deficiency may contribute to even more severe, diffuse bleedings. Early diagnosis remains essential for improving prognosis of patients with AL amyloidoCorrespondence to: Giuseppe Colucci, MD Department of Haematology and Central Haematology Laboratory, University Hospital Inselspital Freiburgstr. 10, 3010 Bern, Switzerland Tel. +41/31/632 02 64, Fax +41/31/632 34 06 E-mail: [email protected] Extracellular tissue deposition of amyloid fibrils causing amyloidosis leads to progressive organ dysfunction and clinical symptoms. The clinical features are dependent on the organs involved and often may reflect advanced organ damage (1). Immunoglobulin light chain (AL) amyloidosis is the most common type of amyloidosis and may sis. Although pictures of amyloid purpura have been often reported in the literature, the clinical diagnosis may be delayed. We report a case of cutaneous manifestation of AL amyloidosis diagnosed not until one year after the appearance of the first symptoms. Diagnostic work-up revealed that the patient suffered from multiple myeloma with secondary AL amyloidosis. Atraumatic ecchymoses at the face, particularly the eyelids as well as in the neck should raise the suspicion of AL amyloidosis. Schlüsselwörter Immunglobulin-Leichtketten-Amyloidose, Multiples Myelom, Amyloidpurpura, Raccoon-Augen Zusammenfassung Die Immunglobulin-Leichtketten- (AL-)Amyloidose ist eine systemische Krankheit infolge Ablagerung pathologischer Amyloidfibrillen. Ein Plasmazell-Klon produziert und sezerniert Bilaterale periorbitale Ekchymosen Ein häufig verpasstes Zeichen der Amyloidpurpura Hämostaseologie 2014;34: 249–252 http://dx.doi.org/10.5482/HAMO-14-03-0018 received: March 9, 2014 accepted in revised form: June 18, 2014 epub ahead of print: June 30, 2014 involve any organ (2). Clinical manifestations of AL amyloidosis are variable but typically include bleeding tendency (3). Skin bleeding in these patients is called amyloid purpura and classically occurs spontaneously and bilaterally in the periorbital region (4). monoklonale, instabile Leichtketten, die als Fibrillen in diversen Organen abgelagert werden. Vorzugsweise sind Nieren, Herz, Nervensystem, Milz, Leber, Gastrointestinaltrakt und Haut betroffen. Ein Hautbefall äußert sich in Form spontan auftretender, typischerweise beidseits periorbital lokalisierter, subkutaner Blutungen. Diese Amyloidpurpura sowie gastrointestinale Blutungen sind bedingt durch die Fragilität der Gefäße infolge der Amyloidablagerung. Gerinnungsfaktoren-inhibierendes Paraprotein, Hyperfibrinolyse, Thrombozytendysfunktion oder akquirierter isolierter Faktor-X-Mangel können zu einer schweren, diffusen Blutungsneigung beitragen. Frühdiagnose und -therapie sind für die Prognose der AL-Amyloidose essenziell. Wir berichten über einen Patienten mit kutaner Manifestation einer AL-Amyloidose, bei dem die klinische Diagnose erst ein Jahr nach Auftreten erster Symptome und Konsultation mehrerer Spezialisten gestellt wurde. Die weitere Abklärung ergab ein multiples Myelom mit sekundärer AL-Amyloidose. Atraumatische Ekchymosen im Gesicht, v. a. im Bereich der Lider, periorbital und im Nacken, sollten den dringenden Verdacht auf AL-Amyloidose wecken und unverzüglich zur Abklärung führen. Early diagnosis before development of organ failure is absolutely essential for improving the prognosis (5). However, the diagnosis is often delayed in clinical practice. We present a patient with cutaneous manifestation of AL amyloidosis. The diagnosis was delayed and only made one year after the appearance of the first symptoms © Schattauer 2014 Hämostaseologie 3/2014 Downloaded from www.haemostaseologie-online.com on 2017-06-17 | IP: 88.99.165.207 For personal or educational use only. No other uses without permission. All rights reserved. 250 G. Colucci et al.: Amyloid purpura Fig. 1 Periorbital region of our patient showing bilateral ecchymoses and after consultations with several medical specialists. Case A man (age: 58 years) had been well until one year before consultation at our haematologic outpatient ward, when recurrent bilateral periorbital, atraumatic ecchymoses developed (▶ Fig. 1). These had occurred on both sides simultaneously, persisted, were painless and occasionally were less accentuated but never disappeared completely. Moreover, the patient suffered from arterial hypertension and diverticulosis. His only medication was a diuretic (torasemide). The patient initially consulted his family physician who referred him to an otorhinolaryngologist, to a radiologist and to an angiologist. Multiple clinical and diagnostic investigations (i. e. computerized tomography and MRI of the head, arterial/ venous Doppler ultrasound and angiography) were performed in order to exclude a local tumour, a venous thrombosis, a vascular malformation as well as a skull fracture. However, no pathologic results were found and the diagnosis remained unclear. Subsequently, the patient was referred to the Department of Ear Nose Throat Head and Neck Surgery at our University Hospital. Again, diagnostic procedures were inconclusive and finally, one year after appearance of the first skin bleeding signs, he was addressed to our outpatient ward for investigation of a haemostatic disorder. The personal bleeding history was otherwise negative and no haemorrhagic diathesis was known in his family. He did neither take aspirin nor anticoagulants. No further skin or mucosal bruises were found and the clinical examination was normal. The typical clinical finding immediately suggested the diagnosis of AL amyloidosis (6–13). Spontaneous bilateral periorbital Fig. 2 Serum protein electrophoresis showing in the gamma region a paraprotein of 11.8 g/l (↓). The immunofixation demonstrated the paraprotein to be IgG lambda. ecchymoses, although apparent in a minority of patients with AL amyloidosis, are almost pathognomonic for this diagnosis. Raccoon eyes may be a sign of advanced amyloid deposition. Therefore, we performed a complete staging. Serum electrophoresis (▶ Fig. 2) and immunofixation demonstrated an IgG lambda paraprotein at a concentration of 11.8 g/l. Serum free light chains type lambda were elevated (217.1 mg/l, normal 5.7–26.3 mg/l) whilst the free light chains type kappa were within the reference range (7.5 mg/l, normal 3.3–19.4 mg/l) and the ratio free kappa/lambda light chains was abnormal (0.03, normal 0.26–1.65). The patient presented with a proteinuria of 0.61 g/l with monoclonal lambda light chains detected by immunofixation. The NT-proB natriuretic peptide was elevated (352 pg/ml, normal < 160 pg/ml), the troponin T was not elevated (<0.003 µg/l, normal <0.014 µg/l). The electrocardiogram was normal without low voltage signs. The echocardiogram showed a left ventricular hypertrophy with diastolic dysfunction, compatible with but not specific for amyloidosis (14). A heart biopsy was not performed. Bone marrow aspirate and biopsy revealed a plasma cell infiltration of 15–20% plasma cells with lambda light chain restriction. Conventional karyotyping detected hyperdiploidy (+3, +6, +9) and fluorescent in situ hybridization (FISH) detected t(6;14). No amyloid deposits were present in the bone marrow biopsy. A rectal biopsy showed amorphous Congo red-positive deposits in vessel walls and interstitium showing apple-green birefringence under polarized light. Lambda immunostaining results were positive. Serum creatinine, urea nitrogen and serum calcium were normal. No osteolytic bone lesions were found by whole body X-ray studies. All haemostatic tests (▶ Tab. 1) as well as the platelet count (210 G/l, reference range: 140–380 G/l) and platelet aggregation in platelet rich plasma were within normal limits demonstrating that in our patient vascular fragility secondary to amyloid deposition was the only abnormality underlying the bleeding tendency. Hämostaseologie 3/2014 © Schattauer 2014 Downloaded from www.haemostaseologie-online.com on 2017-06-17 | IP: 88.99.165.207 For personal or educational use only. No other uses without permission. All rights reserved. G. Colucci et al.: Amyloid purpura A diagnosis of multiple myeloma IgG lambda, Durie-Salmon stage I, International Staging System Score II with secondary lambda light chain amyloidosis was made. As troponin T was negative, an antineoplastic therapy with three cycles dexamethasone and bortezomib was started (15–17). This initial therapy was followed by high-dose melphalan and autologous peripheral blood stem cell transplantation achieving a complete remission and by maintenance therapy with lenalidomide during one year. Serum free light chains normalized. At last clinical control, four months after discontinuation of lenalidomide and two and a half years after diagnosis, a complete remission was demonstrated. Discussion Periorbital ecchymoses or the so-called raccoon eyes are a sign of bleeding into the soft tissues around the eyes [18]. Raccoon eyes may be accompanied by Battle’s sign, an ecchymosis behind the ear along the posterior auricular artery [19]. These symptoms may be the only sign of a basal skull fracture, most often involving the anterior cranial fossa, that ruptured the meninges. Raccoon eyes may be bilateral or unilateral. If bilateral, they are highly suggestive of basal skull fracture, amyloidosis or neuroblastoma, the latter classically occurring in children. Amyloidosis indicates a group of diseases characterized by extracellular tissue deposition of insoluble, rigid and toxic fibrils. To date, thirty heterogeneous human protein precursors are known to form morphologically indistinguishable amyloid fibrils causing localized or systemic amyloidosis (20). Conversion of soluble precursors to fibrils, so-called fibrillogenesis, starts with folding and conformational changes of soluble precursors which assume an antiparallel beta-sheet configuration (21). These fibrils, which have a diameter of 7.5 to 10 nm, form extracellular deposits in the interstitium of organs and /or tissues and cause systemic amyloidosis. Distribution of amyloid deposits in the or- Tab. 1 Results of haemostatic tests assay patient reference range prothrombin time (s) 10.2 8.5–11.5 activated partial thromboplastin time (s) 31.3 25.0–36.0 thrombin time (s) 12.1 11.5–15.0 90 68–140 116 78–153 VII 116 70–139 X 82 78–144 VIII 138 55–164 IX 114 79–138 clotting activity II (%) of factor V XI 97 70–139 5.41* 1.75–3.75 100 70–139 von Willebrand antigen (%) factor ristocetin cofactor activity (%) 191* 42–168 202* 42–136 VWF activity / antigen ratio 1.06 ≥ 0.7 alpha 2 antiplasmin (%) 102 73–126 fibrinogen (g/l) factor XIII activity (%) * above the reference range gans is varying because proteins have a different tropism and aggregate predominantly in defined target organs. In light chain amyloidosis the deposits can involve theoretically any organ (21). Immunoglobulin light chain (AL) amyloidosis is a systemic disease caused by either a small plasma cell clone or, as in the case presented here, by plasma cell myeloma synthesizing an unstable light chain. These monoclonal light chains undergo conformational changes, aggregate and form amyloid fibrils. Deposition of amyloid fibrils leads to progressive organ dysfunction and affects primarily the kidney, heart, autonomic and peripheral nervous system, spleen, liver, gastrointestinal tract and the skin (4). Clinical manifestations of AL amyloidosis reflect advanced organ damage. Typical isolated or combined symptoms and signs include fatigue, renal/ heart failure, oedema, organomegaly, peripheral and autonomic neuropathy, postural hypotension, carpal tunnel syndrome, weight loss, diarrhea, constipation, dyspnea, macroglossia and bleeding tendency (22–24). Skin bleeding in these patients is called amyloid purpura and classically occurs bilaterally in the periorbital region. Bleeding diathesis is mainly due to vessel wall damage by amyloid deposition leading to vascular fragility. The same underlying pathological mechanism predisposes to gastrointestinal bleeding. Moreover, coagulation factor inhibitory circulating paraprotein (25), hyperfibrinolysis (26, 27), platelet dysfunction or isolated acquired factor X deficiency (28–30) may contribute to severe bleeding tendency also in other localizations. The diagnosis of amyloidosis is based on histological demonstration of positive staining with Congo-red and applegreen birefringence in polarized light. Periumbilical fat, rectum or labial salivary glands are the most accessible sites for biopsy searching amyloid deposits. Bone marrow aspirate/biopsy to detect an underlying plasma cell clone including FISH is mandatory. Often patients with AL amyloidosis have a small clonal burden, only 12 to 15 percent of patients with myeloma have symptomatic AL amyloidosis (21). The morbidity and mortality from primary or secondary AL amyloidosis are high and early diag- © Schattauer 2014 Hämostaseologie 3/2014 Downloaded from www.haemostaseologie-online.com on 2017-06-17 | IP: 88.99.165.207 For personal or educational use only. No other uses without permission. All rights reserved. 251 252 G. Colucci et al.: Amyloid purpura nosis remains the principal factor for improving the prognosis of patients with AL amyloidosis (4). The diagnosis may be delayed in the case of unspecific features. Treatment modalities of light chain amyloidosis have recently been updated by Leung et al. (31) and by Mahmood et al. (32). Conclusion Amyloid purpura is a cutaneous manifestation of AL amyloidosis typically apparent in the periorbital region. Deposition of immunoglobulin light chains in the vascular wall is considered the principal mechanism leading to vascular fragility and bleeding. 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