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Inicio Revista Española de Medicina Nuclear e Imagen Molecular (English Edition) Diagnosis of unknown sarcoidosis associated to erythema nodosum with 18F-FDG PET...
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Vol. 32. Issue 3.
Pages 190-192 (May - June 2013)
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Vol. 32. Issue 3.
Pages 190-192 (May - June 2013)
Clinical note
Diagnosis of unknown sarcoidosis associated to erythema nodosum with 18F-FDG PET/CT
Diagnóstico de sarcoidosis desconocida asociada a eritema nodoso, mediante 18F-FDG PET/TAC
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L. Rampin
Corresponding author
rampin.lucia@azisanrovigo.it

Corresponding author.
, A. Musto, M.C. Marzola, S. Tadayyon, A. Ferretti, S. Chondrogiannis, G. Grassetto, D. Rubello
Nuclear Medicine Department – PET/CT Centre, Santa Maria della Misericordia Hospital, Rovigo, Italy
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Abstract

A 76-year-old woman was referred to our centre to perform 18F-FDG PET/CT with the clinical suspicion of vasculitis. Whole body PET was negative for vasculitis but it depicted moderate hypermetabolism in several lymph nodes of the mediastinum and intense uptake of the tracer in the parotid glands. Since the patient referred skin lesion on both legs a particular acquisition of the lower extremities was performed which showed diffuse uptake on the perimalleolar region of both legs. On the basis of the PET/CT findings that were suggestive for sarcoidosis the patient performed bronchoalveolar lavage (BAL) and biopsy of a mediastinal lymph node which confirmed the suspicion of sarcoidosis.

Keywords:
Unknown sarcoidosis
Erythema nodosum
FDG PET/CT
Resumen

Una mujer de 76 años fue remitida a nuestro Centro de Medicina Nuclear para someterse a 18F-FDG PET/TAC con sospecha clínica de vasculitis. La PET de cuerpo entero resultó negativa para vasculitis pero mostró hipermetabolismo moderado en varios ganglios linfáticos del mediastino y una captación intensa en las glándulas parótidas. Dado que la paciente refirió en anamnesis lesiones eritematosas de la piel en ambas piernas, realizamos una adquisición de PET de las extremidades inferiores que mostró una captación difusa en la región perimaleolar en ambas piernas. Sobre la base de los hallazgos de la PET/TAC que sugirieron sarcoidosis la paciente fue sometida a un lavado broncoalveolar (BAL) y a una biopsia de un ganglio linfático mediastínico que confirmó la sospecha de sarcoidosis.

Palabras clave:
Sarcoidosis desconocida
Eritema nodoso
FDG PET/TAC

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