<i>Actinomyces meyeri</i>: A Rare Cause of Postsurgical Pelvic Actinomycosis

Markey, Chad; Vestal, Lauren E.

doi:10.1155/2018/3842048

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…The most common form of genitourinary tract actinomycosis is pelvic actinomycosis in young, fertile women using intrauterine contraceptive devices (IUDs), but nowadays, according to the introduction of modern microbiological techniques, some other clinical presentations have also been described, such as primary bladder actinomycosis and testicular actinomycosis [82,83]. Different strains of Actinomyces species found normally in the human (female) urogenital tract include: A. meyeri, A. neuii, Actinomyces radingae, Actinomyces turicensis, and Actinomyces urogenitalis [84][85][86][87][88]. Colonization of the female genital tract by these Actinomyces spp.…”

Section: Infections Of the Female Genital Tractmentioning

confidence: 99%

The Pathogenic Role of Actinomyces spp. and Related Organisms in Genitourinary Infections: Discoveries in the New, Modern Diagnostic Era

Gajdács

Urbán

2020

Antibiotics

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Actinomycosis is a chronic, suppurative, granulomatous infectious disease, caused by different species of Actinomyces bacteria. To date, 26 validly published Actinomyces species have been described as part of a normal human microbiota or from human clinical specimens. Due to the rapid spread of new, modern diagnostic procedures, 13 of 26 of these species have been described in this century and the Actinomycetaceae family has undergone several taxonomic revisions, including the introduction of many novel species termed Actinomyces-like organisms (ALOs). There is scarce data available on the role of these novel bacterial species in various infectious processes in human medicine. The aim of this review is to provide a comprehensive overview of Actinomyces and closely related organisms involved in human diseases—with a special focus on newly described species—in particular their role in genitourinary tract infections in females and males.

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Section: Infections Of the Female Genital Tractmentioning

confidence: 99%

The Pathogenic Role of Actinomyces spp. and Related Organisms in Genitourinary Infections: Discoveries in the New, Modern Diagnostic Era

Gajdács

Urbán

2020

Antibiotics

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“…The main abdominopelvic actinomycosis usually imitates an intra-abdominal tumor or malignancy because of its capacity to establish a mass infiltrated while postoperative actinomycosis occurs more frequently as abscess [7]. Our patient was considered with a skin fistula with peritoneal mass, while it might be a single abscess of the liver, mimics an inflammatory bowel disease or pelvic abscess [4,8]. Similar to our case, other cases of actinomycosis commonly do not cause signs or symptoms of the characteristic disease and generally manifests itself as a slow-growing mass, which can be related to vomiting, nausea, altered bowel habit changes and pain [6]; causes preoperative diagnosis mistake and is found in only less than 10% of cases and histopathological examination in other cases is the most used diagnostic methods after an operation [6].…”

Section: Discussionmentioning

confidence: 93%

Abdominal Actinomycosis: A Case Report

Mousavi

Miratashiyazdi

Kargar

et al. 2020

Journal of Microbiology and Infectious Diseases

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Actinomycosis is created by a gram-positive organism that does not exist uninhibitedly in nature, but rather ordinary is colonized in the parts including gastrointestinal and genital tract in female and oropharynx. It is well known for its ability to develop into aggressive masses even without fistulas. Here, we introduce a case with abdominal actinomycosis that is one of the particular clinical types of infection. J Microbiol Infect Dis 2020; 10(1):56-58.

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“…A. meyeri is likely to cause systemic dissemination, especially to the skin, liver, brain, long bones, and muscles. This unusual feature is mainly related to aspiration pneumonia [12]. Pulmonary actinomycosis is a great imitator and is often misdiagnosed as malignancy or tuberculosis.…”

Section: Discussionmentioning

confidence: 99%

Pulmonary invasive mucinous adenocarcinoma mimicking pulmonary actinomycosis

et al. 2022

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Background Primary pulmonary invasive mucinous adenocarcinoma is a rare and distinct subtype of lung adenocarcinoma. Case presentation A 72-year-old woman presented with productive cough for two months and fever for six days. Chest computed tomography (CT) showed a mass in the left lower lobe. Sputum culture tested negative for bacteria, but the sequence of Actinomyces meyeri was detected by metagenomic next generation sequencing from the bronchoalveolar lavage fluid. It was considered a pathogenic bacterium as the normalized number of DNA sequencing reads was 10 times higher than the normal level. The patient’s symptoms alleviated quickly, and the chest CT lesion shrank to a third of the original size following treatment with penicillin for two months. However, a repeat chest CT performed after four months of treatment revealed that the lesion had expanded. Positron emission tomography/CT revealed that fluorodeoxyglucose metabolism was increased in the mass with surrounding ground glass density of the left lower lobe. Furthermore, CT-guided percutaneous lung biopsy was performed, and hematoxylin–eosin staining showed columnar tumor cells with abundant mucin in the cytoplasm with a basal nucleus. Finally, the patient was diagnosed with pulmonary invasive mucinous adenocarcinoma and agreed to undergo a thoracoscopic surgery. Conclusions Pulmonary invasive mucinous adenocarcinoma is a subset of lung adenocarcinoma with low incidence rate. The clinical features and CT findings are non-specific. A histopathological diagnosis is of fundamental importance in preventing misdiagnosis.

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Actinomyces meyeri: A Rare Cause of Postsurgical Pelvic Actinomycosis

Cited by 5 publications

References 9 publications

The Pathogenic Role of Actinomyces spp. and Related Organisms in Genitourinary Infections: Discoveries in the New, Modern Diagnostic Era

The Pathogenic Role of Actinomyces spp. and Related Organisms in Genitourinary Infections: Discoveries in the New, Modern Diagnostic Era

Abdominal Actinomycosis: A Case Report

Pulmonary invasive mucinous adenocarcinoma mimicking pulmonary actinomycosis

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