title: Dermatomyositis as the first manifestation of a lung tumor.
abstract: Dermatomyositis (DM) is a rare disease characterised by proximal muscle weakness and a typical cutaneous rash. The muscle biopsy shows inflammatory lesions consistent with myositis, being related to an increased risk of cancer, often considered as a paraneoplastic syndrome. The authors present a case of a 63-year-old man, with progressive proximal muscle weakness and cutaneous rash, appearing in two months. The muscle and skin biopsies were consistent with DM. Chest tomography showed a nodular image in the lingular region and bronchy biopsy confirmed the diagnosis of small cell lung carcinoma (SCLC). This clinical case intends to enhance the importance of a thorough diagnostic study in patients with DM, as it is often a paraneoplastic syndrome.
authors.affiliation: Serviço de Pneumologia, Centro Hospitalar Vila Nova Gaia-Espinho, Vila Nova de Gaia, Portugal. anasfcastro@gmail.com
authors.forename: A S
authors.initials: AS
authors.lastname: Castro
authors.forename: A
authors.initials: A
authors.lastname: Barroso
authors.forename: B
authors.initials: B
authors.lastname: Parente
mesh_terms: D003882:Dermatomyositis / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications*; D008297:Male; D008875:Middle Aged; D010257:Paraneoplastic Syndromes / Q000209:etiology*; D055752:Small Cell Lung Carcinoma / Q000150:complications*
keywords: Dermatomiosite; Dermatomyositis; Lung neoplasms; Neoplasias pulmonares; Paraneoplastic syndrome; Síndrome paraneoplásico