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Medicina (Buenos Aires)

versión impresa ISSN 0025-7680versión On-line ISSN 1669-9106


RUIZ, Victoria et al. Hemoptysis after COVID-19 and the importance of differential diagnosis: Birt-Hogg-Dubé syndrome. Medicina (B. Aires) [online]. 2023, vol.83, n.2, pp.307-314. ISSN 0025-7680.

Birt-Hogg-Dubé syndrome is a genodermatosis of auto somal dominant inheritance characterized by mutations in the folliculin (FLCN) gene. There is an inappropriate inhibition/activation of a protein, the foliculin, which may cause tumor lesions in skin, renal and lung lesions; they could have more risk of developing pneumothorax compared to the normal population. A 38-year-old male patient with bronchial asthma who consulted for hemop tysis three weeks after recovery from COVID-19 infection. A chest tomography was requested, showing an air cyst in the left lower lobe. Physical examination shows evi dence of thoracic skin lesions which a skin biopsy was performed on. The results were compatible with fibrofol liculoma. Differential diagnoses were proposed. A genetic disorder associated with skin lesions was suspected. A multi-genetic panel that includes BRCA1, BRCA2, TP53 and FLCN genes was requested, which reported the mu tation of the FLCN gene in heterozygosis classified as pathognomonic of Birt-Hogg-Dubé syndrome. Patient is currently under clinical follow-up while genetic counsel ing was requested for relatives.

Palabras clave : Birt-Hogg-Dubé syndrome; Fibrofollicu loma; Spontaneous pneumothorax.

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