Actinomicosis en el hueso temporal. Reporte de un caso pediátrico / Actinomycosis in temporal bone. A pediatric case report

La actinomicosis es una infección causada por un bacilo anaerobio Gram-positivo, filamentoso, ramificado, no esporulado. Integra la flora habitual de la orofaringe y coloniza transitoriamente el tracto gastrointestinal, genital femenino y el árbol bronquial. Es poco frecuente en el hueso temporal. Por su semejanza a un hongo, es difícil su reconocimiento, lo que hace necesaria la sospecha clínica para obtener los cultivos apropiados en condiciones anaeróbicas en forma prolongada. Los hallazgos microscópicos típicos incluyen necrosis con gránulos de azufre amarillento y la presencia de filamentos que se asemejan a infecciones fúngicas. El tratamiento requiere de elevadas y prolongadas dosis de antibiótico con penicilina o amoxicilina, entre 6 y 12 meses. La duración de la terapia antimicrobiana podría ser reducida en pacientes que han sido operados quirúrgicamente. Se presenta, a continuación, un caso clínico de actinomicosis en el hueso temporal en un paciente pediátrico que requirió tratamiento quirúrgico para su resolución.

Actinomycosis is an infection caused by a Gram-positive, filamentous anaerobic bacillus. Mainly belonging to the human commensal flora of the oropharynx, it normally colonizes the human digestive and genital tracts and the bronchial tree. It is slightly frequent in the temporal bone. Bacterial cultures and pathology are the cornerstone of diagnosis, but particular conditions are required in order to get the correct diagnosis. Prolonged bacterial cultures in anaerobic conditions are necessary to identify the bacterium and typical microscopic findings include necrosis with yellowish sulfur granules and filamentous Gram-positive fungal-like pathogens. Patients with actinomycosis require prolonged (6- to 12-month) high doses of penicillin G or amoxicillin, but the duration of antimicrobial therapy could probably be shortened in patients in whom optimal surgical resection of infected tissues has been performed. A pediatric patient with actinomycosis in temporal bone who needed surgery resolution is reported.

Actinomicosis esofágica en pacientes con infección por VIH / Esophageal actinomycosis in patients with HIV infection

La patología esofágica es común en pacientes con VIH, frecuentemente debido a Candida, citomegalovirus o virus herpes simple. Sin embargo, la actinomicosis esofágica es una infección rara, incluso en pacientes con infección VIH. Reportamos el caso en un paciente varón de 33 años, con diagnóstico reciente de VIH que acudió a consulta por fiebre, odinofagia, disfagia y dolor retroesternal. La endoscopia digestiva alta evidenció múltiples úlceras esofágicas y el informe histopatológico de la biopsia esofágica describió una esofagitis crónica con presencia de colonias de bacilos PAS positivos, compatibles con Actinomyces, iniciando tratamiento antimicrobiano con evolución favorable. Aunque es una enfermedad no común, cerca de un tercio de los casos de actinomicosis esofágica se presentan en pacientes con infección VIH, y es preciso el estudio endoscópico con toma de biopsia para definir el diagnóstico y manejo apropiado.

Esophageal pathology is common in patients with HIV, frequently due to Candida, cytomegalovirus or herpes virus. However, esophageal actinomycosis is a rare infection, even in patients with HIV. We report the case of a 33-year-old male patient, with a recent diagnosis of HIV who was admitted for fever, odynophagia, dysphagia and retrosternal pain. Upper gastrointestinal endoscopy evidenced multiple esophageal ulcers and the histopathological report of the esophageal biopsy described a chronic esophagitis with colonies of PAS positive bacilli, compatible with Actinomyces, initiating favorable antimicrobial therapy. Although it is an uncommon disease, about one-third of cases of esophageal actinomycosis occur in patients with HIV infection, and endoscopic biopsies are required to define diagnosis and appropriate treatment.

Actinomycosis, a lurking threat: a report of 11 cases and literature review

Abstract Actinomycosis remains characteristically uncommon, but is still an important cause of morbidity. Its clinical presentation is usually indolent and chronic as slow growing masses that can evolve into fistulae, and for that reason are frequently underdiagnosed. Actinomyces spp is often disregarded clinically and is classified as a colonizing microorganism. In this review of literature, we concomitantly present 11 cases of actinomycosis with different localizations, diagnosed at a tertiary hospital between 2009 and 2016. We outline the findings of at least one factor of immunosuppression in > 90% of the reported cases.

Tuberculosis y actinomicosis: Un caso pediatrico de comorbilidad / Pulmonary actinomycosis and tuberculosis: A comorbidity pediatric case

La actinomicosis es una infección supurativa crónica, producida por bacterias Gram-positivas anaeróbicas o especies Actinomyces microaerófilas. Es rara en niños y adolescentes; es más común en inmunodeprimidos. El Mycobacterium tuberculosis colabora en el desarrollo de la enfermedad. La afectación pulmonar aparece como un cuadro de condensación crónica que no mejora con el tratamiento antibiótico convencional. Las complicaciones clásicas de afectación de la pared torácica con fistulización y supuración en «granulo de azufre¼ son descritas con menor frecuencia en la actualidad. El diagnóstico es un verdadero desafío y se establece mediante el aislamiento de las especies de Actinomyces. El tratamiento de elección para todas las formas clínicas de la enfermedad es el uso prolongado de antibióticos. Objetivo. Presentar un caso pediátrico de comorbilidad entre tuberculosis y actinomicosis. Resaltar la importancia de la sospecha diagnóstica de actinomicosis frente a todo proceso supurado crónico.

Actinomycosis is a chronic suppurative infection, produced by anaerobic Gram-positive bacteria or microaerobic Actinomyces species. It is rare in children and adolescents and it is more common in immunocompromised. Mycobacterium tuberculosis collaborates on the development of the disease. Pulmonary involvement appears as a picture of chronic condensation that does not improve with conventional antibiotic treatment. Classic complications affecting the thoracic wall with drainage in «sulfur granule¼ and fistulization are described less frequently nowadays. The diagnosis is a real challenge and it is set by using the isolation of species of Actinomyces. The treatment of choice for all clinical forms of the disease is the prolonged use of antibiotics. Objective: to present a pediatric case of comorbidity between tuberculosis and actinomycosis and to highlight the importance of diagnostic suspicion of actinomycosis in the presence of all chronic suppurative processes.

Actinomicosis torácica: presentación de un caso / Thoracic actinomycosis: report of a case

La actinomicosis es una enfermedad producida por bacterias del género Actinomyces. La forma torácica representa el 30% de los casos. La evolución es habitualmente crónica, con clínica variable. Se presenta una nina de 11 años de edad con tumefacción subescapular derecha de un mes de evolución, asociada a fiebre, hiporexia y pérdida de peso. Se diagnosticó actinomicosis torácica producida por Actinomyces meyeri. Recibió tratamiento antibiótico durante un año, con resolución completa. Aunque es poco frecuente, debe ser tenida en cuenta como diagnóstico diferencial en cuadros de tumoración torácica de larga evolución con compromiso del estado general. Debe informarse al microbiólogo la sospecha diagnóstica por lo difícil de su desarrollo en los medios de cultivo habitual.

Actinomycosis is a disease produced by bacteria of the genus Actinomyces. The thoracic form represents 30% of the cases. Signs and symptoms are generally unspecific. A previously healthy 11 year old girl was admitted with a chest mass of a month of evolution associated with fever, hyporexia and weight loss. Thoracic actinomycosis was diagnosed with the isolation of Actinomyces meyeri in the mass drainage. She received antibiotic treatment for a year with complete resolution. Although rare, it should be taken into account as a differential diagnosis in long evolution thoracic tumor affecting the general condition. The microbiologist must be warned about the suspected diagnosis because it is difficult to find it in routinely used culture media.

Osteomielitis mandibular por actinomices: Reporte de caso / Mandibular osteomyelitis by actinomyces: Case report

Se reporta el caso de un paciente varón de 27 años con antecedente de exodoncia compleja de la tercera molar mandibular inferior derecha que presentaba una tumefacción circunscrita dolorosa en la región submandibular ipsilateral. En el estudio imaginológico, la radiografía panorámica presentaba un proceso osteolítico periapical e interradicular con un patrón osteogénico circundante por lo que se utilizó como complemento una tomografía cone beam, en donde se evidenció compromiso desde la rama mandibular derecha hasta la sínfisis mandibular. Las lesiones a nivel de tejidos blandos y tejidos duros fueron diagnosticadas y manejadas como una actinomicosis cervicofacial y osteomielitis crónica supurativa respectivamente. El conocimiento de las diferentes infecciones bacterianas, un adecuado análisis clínico y estudio imaginológico nos darán la pauta para la correcta terapéutica de las distintas patologías maxilofaciales.

A Case of a 27-years old male with a history of complex extraction of right mandibular third molar that had a painful circumscribed swelling in the ipsilateral submandibular region. In imaging studies, the ortopantograph showed a periapical and interradicular osteolytic process with a osteogenic pattern surrounding, so we used a Cone beam Tomography as complement where we found commitment from the right ramus to the mandibular symphsis. Damage at soft and hard tissue were diagnosed and managed as a cervicofacial actinomycosis and supurative chronic osteomyelitis respectively. The knowledge of different bacterial infections, appropriate clinical analysis and imaging studies will lead us to the correct therapy of various maxillofacial pathologies.

Actinomycosis affecting the spinal cord: a case report / Actinomicose comprometendo a medula espinhal: um relato de caso

Actinomycosis is a rare, chronic, suppurative, granulomatous infection caused by a group of gram-positive anaerobic bacteria belonging to the natural flora of the oral cavity and gastrointestinal and urogenital tracts. It may involve several organs. This case study refers to pulmonary actinomycosis with chest wall involvement and cord compression in a 29-year-old male who presented with fever, cough, hemoptysis, neck pain, and paresis and plegia of the lower limbs of 5-month duration.

A actinomicose é uma infecção rara, crônica, supurativa e granulomatosa, causada por um grupo de bactérias anaeróbias Gram-positivas que pertencem à flora natural da cavidade oral, do aparelho gastrointestinal e urogenital. Pode envolver diversos órgãos. O estudo refere-se à actinomicose pulmonar com envolvimento da parede torácica e compressão medular em um paciente masculino com 29 anos que apresentava febre, tosse, hemoptise e cervicalgia, além de paresia e plegia em membros inferiores com cinco meses de evolução.

Actinomicosis pulmonar: Diagnóstico por punción-aspiración con aguja fina / Pulmonary actinomycosis: Fine needle aspiration diagnostic

Se presentan 4 casos de actinomicosis pulmonar en pacientes mayores de 40 años, 2 de ellos con enfermedad pulmonar obstructiva crónica (EPOC), que mostraron un aumento de la tos productiva, episodios de disnea, hemoptisis y fiebre de larga evolución. En las radiografías de tórax de rutina se observaban imágenes segmentarias de consolidación aérea, sugestivas de cuadros neumónicos no resueltos o neoplasia. La tomografía axial computarizada (TAC) mostró hallazgos similares a los anteriores. Los cultivos de esputo y las pruebas de Mantoux fueron repetidamente negativos. Debido a la mala evolución de los pacientes y a los hallazgos radiológicos, se practicó una punción-aspiración con aguja fina (PAAF) para descartar neoplasia. En la citología se observaron conglomerados tridimensionales, de bordes filamentosos y aspecto algodonoso compatibles con Actinomyces. El tratamiento antibiótico produjo la mejoría del cuadro clínico y el seguimiento demostró la desaparición de las opacidades radiológicas. Actualmente, la actinomicosis pulmonar es infrecuente y la sintomatología inespecífica, por lo que puede confundirse con procesos neoplásicos. Por tanto, en pacientes con factores de riesgo, síntomas de neumonía subaguda e imágenes radiológicas de consolidación del parénquima es aconsejable considerar la posibilidad de actinomicosis pulmonar. Es una enfermedad tratable y su correcto diagnóstico mediante la PAAF evita al paciente pruebas diagnósticas más agresivas, retrasos en el diagnóstico y le permite una cura completa con tratamiento antibiótico.

We present four cases of pulmonary actinomycosis in patients over 40 years of age, two of them with chronic obstructive pulmonary disease (COPD), showing an increase in productive cough, episodes of dyspnea, hemoptysis and long-term fever. Routine chest radiographs revealed segmental air-space consolidation, suggestive of unresolved pneumonia or neoplasm. Computed tomography (CT) scan showed similar findings to the ones previously described. Sputum cultures for mycobacteriae and Mantoux tests were constantly negative. Due to the poor clinical and radiodological outcome of the patients, a fine needle aspiration (FNA) was made to rule out a neoplasm. Tridimensional filamentous colonies of Actinomyces were observed in cytology. Antibiotic treatment resulted in an improvement of symptoms. The follow-up showed a decrease of the consolidation areas. Pulmonary actinomycosis is rare nowadays and clinical symptoms are unspecific and can be confused with a neoplasm process. Therefore, in patients with risk factors, symptoms of subacute pneumonia and radiologic findings of consolidation, it is advisable to consider pulmonary actinomycosis as a diagnostic possibility. It is a treatable disease and its correct diagnosis by FNA, avoids performing invasive diagnostic tests, delays in the diagnosis and allows for a complete cure by antibiotic therapy.

Tratamento da actinomicose pulmonar com levofloxacina / Treatment of pulmonary actinomycosis with levofloxacin

A actinomicose é uma infecção bacteriana supurativa crônica caracterizada por múltiplos abcessos, trajetos fistulosos e fibrose envolvendo a face, o pescoço, o tórax e o abdômen. É causada por uma bactéria anaeróbia, Gram-positiva e saprófita (Actinomyces). A actinomicose pulmonar primária é uma doença rara que resulta provavelmente da aspiração de secreções da orofaringe. Pode apresentar-se como uma doença respiratória crônica. O tratamento de escolha é a antibioticoterapia com penicilina. Os autores apresentam o caso clínico de uma mulher de 55 anos com diagnóstico de actinomicose pulmonar tratada com sucesso com levofloxacina.

Actinomycosis is a chronic suppurative bacterial infection characterized by multiple abscesses, fistulous pathways, and fibrosis involving the face, neck, chest, and abdomen. It is caused by an anaerobic Gram-positive saprophytic bacterium (Actinomyces). Primary actinomycosis of the lung is a rare disease that probably results from aspiration of oropharyngeal secretions. It can present as a chronic respiratory disease. The treatment of choice is antibiotic therapy with penicillin. The authors report the case of a 55-year-old female diagnosed with pulmonary actinomycosis and successfully treated with levofloxacin.

Achados radiográficos na actinomicose pulmonar: a propósito de um caso clínico / Radiographic findings in the thoracic actinomycosis: apropos a clinical case

A infecção crônica causada pelas bactérias do gênero Actinomyces pode induzir a uma resposta inflamatória supurativa com formação de granulomas. Esta possui como característica a disseminação por contigüidade, sem respeitar barreiras anatômicas, com tendência à formação de fístulas. A tomografia computadorizada demonstra doença de espaços aéreos não-segmentar, eressonância magnética pode-se ter sua forma característica de extensão avaliada, gerando sinais hipointenso em T1 e hiperintenso em T2. Deve-se considerar inicialmente no diagnóstico diferencial de doenças granulomatosas e neoplásicas, evitando, assim, retardo na instituição do tratamento e sua disseminação característica.

The chronic infection caused by Actinomyces bacteria can result in a supurative inflammatory response with generation of granulomas. The most characteristic feature is the contiguous dissemination, without respect the anatomic lines and with fistulating process. The computed tomography shows a non-segmentary disease of air space and in magnetic resonance imaging can have its characteristic spread evaluated, generating low signal in T1 and high signal in T2. We have to consider actinomycosis in the differentialdiagnosis of granulomatous and neoplasic diseases, avoiding retard in treatment and its characteristic dissemination.