[Clinical presentation and short-term treatment of pulmonary actinomycosis]. / Manifestations cliniques et traitement de courte durée de l'actinomycose pulmonaire.

Actinomycosis is an uncommon disease caused by Actinomyces, a commensal of the oropharyngeal, digestive, and genital tract. Commonly, it manifests as cervicofacial infection and is often related to poor oral health, smoking, chronic alcoholism or immune deficiency. Pulmonary actinomycosis is a rare disease, characterized by unspecific clinical, biological, and radiological manifestations that may be confused with other diseases. It should always be considered in patients suspected of having tuberculosis, lung abscess or pulmonary neoplasia. We describe a case of pulmonary actinomycosis treated successfully with short-term antibiotic therapy of three months, with a short review of the literature.

L'actinomycose est une infection peu fréquente causée par l'espèce Actinomyces, un commensal du tractus oropharyngé, digestif et génital. Elle se manifeste généralement par une infection cervico-faciale, souvent liée à un mauvais état bucco-dentaire, un tabagisme, un éthylisme chronique, ou un déficit immunitaire. L'actinomycose pulmonaire est une affection peu commune, caractérisée par des manifestations cliniques, biologiques et radiologiques peu spécifiques qui peuvent être confondues avec d'autres maladies. Elle doit être évoquée en cas de suspicion de tuberculose, d'abcès et de néoplasie pulmonaire. Nous décrivons un cas d'actinomycose pulmonaire traitée avec succès par une antibiothérapie de courte durée de 3 mois, avec une revue simplifiée de la littérature.

Diagnosis and management of COVID toes in outpatients: a case report.

BACKGROUND: Since the beginning of the coronavirus disease 2019 pandemic, the most common skin lesions observed due to infection with the severe acute respiratory syndrome coronavirus 2 are pseudochilblains (or coronavirus disease toes). However, this pathology remains infrequent and difficult to diagnose, as no specific test exists. CASE PRESENTATION: Two Caucasian women, 30 and 22 years old, presented to our General Medicine Unit with perniosis lesions on the feet during the first two waves of the coronavirus disease 2019 pandemic. They did not have respiratory or general symptoms of severe acute respiratory syndrome coronavirus 2 infection, the reverse transcription polymerase chain reaction on nasopharyngeal swabs was negative, and the serology was positive only in the first case. The clinical presentation differed for the two cases, as the second patient suffered from swelling and burning after cold application. The diagnosis was based on clinical presentation, temporality, exclusion of other differential diagnoses, and blood test results (positive serology in the first case and high level of CXCL13 and VEGF in the second), supported by current literature. Lesions resolved spontaneously in the first patient. The second case was hospitalized for pain management and received corticosteroid therapy with resolution of the symptoms. CONCLUSION: These two cases with different clinical presentations illustrate the diagnostic approach to coronavirus disease 2019, a challenging disease with diverse manifestations, including, in some cases, coronavirus disease toes. We present a literature review that illustrates the progression of scientific research. Skin lesions associated with coronavirus disease 2019 infection could be the expression of an important interferon type 1 response and should be considered in the differential diagnosis in a primary care setting.