Sporadic actinomycosis of the hip complicated by Central Nervous System infection

Actinomycosis is caused by the Gram positive filamentous Actinomyces bacterial species that are normal commensals of the oral cavity. Due to their low virulence, disease is rare in the immune competent patient. Although it may afflict any system in the body, involvement of the musculoskeletal system is uncommon. Here in, we describe the case of a 60 year old lady presenting with low grade fever, left hip pain and drowsiness. She was diagnosed as left hip actinomycosis on Computed tomogram (CT) guided biopsy and histopathological analysis of infiltrative lesions identified on Magnetic Resonance Imaging (MRI). She also had meningitis diagnosed on cerebrospinal fluid analysis which improved with treatment of actinomycosis. Actinomycosis of the hip is rare, and occurs in the presence of described predisposing factors. To the best of our knowledge, this is the first case of sporadic actinomycosis of the hip complicated by meningitis in an immune competent individual.

Pulmonary actinomycosis masquerading as aspergilloma

We report a case of a 34-year-old man who was initially treated as community acquired pneumonia following a three-month-history of productive cough, loss of weight and loss of appetite. However, three months after discharged from the hospital, he presented again with worsening respiratory symptoms and radiological evidence of a lung cavitation with intracavitary lesion resembling an aspergilloma associated with surrounding consolidation. Unfortunately, he remained symptomatic despite on antifungal therapy. The repeat computed-tomography demonstrated persistent cavitating lesion with development of necrotising pneumonia. He underwent lobectomy and the histopathological analysis of the resected specimen however revealed the diagnosis of actinomycosis.

[Pseudotumoral pelvic actinomycosis : one should think of it]

Actinomycosis is a rare chronic disease caused by a group of anaerobic Gram positive bacteria. It may mimic a neoplasia at various anatomical levels. A pelvic localization is exceptional but has an increasing incidence since the use of intrauterine devices. In such cases, pelvic actinomycosis may present as a gynecological or a lower colonic malignancy. For all atypical clinical, with a prominent infectious or inflammatory context, the diagnosis of actinomycosis must be suggested and discussed with the pathologist to whom the biopsy will be submitted. In the absence of a preoperative diagnosis, an inadequately aggressive pelvic surgery might be performed and rendered particularly complex due to the adherent and diffusely inflammatory pattern of the disease. The treatment of choice remains a long-term therapy with antibiotics that leads to a complete clinical and radiological response in the majority of cases. We report the case of a 27-year-old woman with a clinical and radiological diagnosis of rectal carcinoma but with limited preoperative biopsy that revealed a pelvic actinomycosis and allowed a conservative and successful antibacterial treatment.

Cardiac Tamponade Due to Actinomyces odontolyticus Originating From a Dentigerous Cyst

This report describes a rare case of pericardial effusion owing to Actinomyces odontolyticus in a 52-year-old woman that originated from a dentigerous cyst, which developed on the distal aspect of a lower left third molar. The cyst had remained asymptomatic for a long period, with no specific functional complications. This is the first case report of a patient with acute pericarditis in which the same strain of A odontolyticus was detected in an asymptomatic dentigerous cyst and in the pericardial fluid.

Clinical features of actinomycosis: A retrospective, multicenter study of 28 cases of miscellaneous presentations

Actinomycosis is a rare heterogeneous anaerobic infection with misleading clinical presentations that delay diagnosis. A significant number of misdiagnosed cases have been reported in specific localizations, but studies including various forms of actinomycosis have rarely been published.We performed a multicenter retrospective chart review of laboratory-confirmed actinomycosis cases from January 2000 until January 2014. We described clinical characteristics, diagnostic procedures, differential diagnosis, and management of actinomycosis of clinical significance.Twenty-eight patients were included from 6 hospitals in France. Disease was diagnosed predominately in the abdomen/pelvis (n = 9), orocervicofacial (n = 5), cardiothoracic (n = 5), skeletal (n = 3), hematogenous (n = 3), soft tissue (n = 2), and intracranially (n = 1). Four patients (14%) were immunocompromised. In most cases (92 %), the diagnosis of actinomycosis was not suspected on admission, as clinical features were not specific. Diagnosis was obtained from either microbiology (50%, n = 14) or histopathology (42%, n = 12), or from both methods (7%, n = 2). Surgical biopsy was needed for definite diagnosis in 71% of cases (n = 20). Coinfection was found in 13 patients (46%), among which 3 patients were diagnosed from histologic criteria only. Two-thirds of patients were treated with amoxicillin. Median duration of antibiotics was 120 days (interquartile range 60-180), whereas the median follow-up time was 12 months (interquartile range 5.25-18). Two patients died.This study highlights the distinct and miscellaneous patterns of actinomycosis to prompt accurate diagnosis and earlier treatments, thus improving the outcome. Surgical biopsy should be performed when possible while raising histologist's and microbiologist's awareness of possible actinomycosis to enhance the chance of diagnosis and use specific molecular methods.

PELVIC ACTINOMYCOSIS MIMICKING A LOCALLY ADVANCED PELVIC MALIGNANCY--CASE REPORT

We present the case of a former user of an intrauterine contraceptive device (IUD) for 10 years, diagnosed with a bulky, fixed pelvic tumor involving the internal genital organs and the recto sigmoid, causing luminal narrowing of the rectum, interpreted as locally advanced pelvic malignancy, probably of genital origin. Intraoperatively, a high index of suspicion made us collect a sample from the fibrous wall of the tumor mass, large Actinomyces colonies were thus identified. Surgery consisted in debridement, removal of a small amount of pus and appendectomy, thus avoiding a mutilating and useless surgery. Specific antibiotic therapy was administered for 3 months, with favorable postoperative and long-term outcomes. Pelvic actinomycosis should always be considered in the differential diagnosis of pelvic tumors in women using an IUD. The association of long-term antibiotic treatment is essential to eradicate the infection and prevent relapses.

Chronic Actinomyces Infection Caused by Retained Cervical Cerclage: A Case Report

BACKGROUND

Historically, Actinomyces infection has been associated primarily with the intrauterine device. Recently, case reports associating Actinomyces with other implants have been described, including nonwoven polypropylene mesh used for urethral slings and Mersilene cerclage placements. However, there are no reported cases of chronic Actinomyces infections associated with retained Mersilene cerclage.

CASE

A 51-year-old woman, gravida 3, para 3, presented with a 10-year history of vaginal discharge and Actinomyces identified on endometrial biopsy. After failing medical treatment and undergoing a hysterectomy, the patient was found to have a retained Mersilene cerclage.

CONCLUSION

This is the first case to report persistent Actinomyces infection with a retained Mersilene cerclage. No current recommendations exist for assessing full removal of cerclage. Clinicians should have a high suspicion of Actinomyces infection in a patient who presents with persistent vaginal discharge and history of cerclage placement.

[Postoperatively Diagnosed Pulmonary Actinomycosis;Report of Three Cases]

Three cases of pulmonary actinomycosis have been postoperatively diagnosed in our hospital in the past 3 years. All the cases were preoperatively difficult to differentiate from lung cancer, and all were diagnosed in men. One of the patients was diagnosed on the basis of clinical symptoms, while the other 2 patients were diagnosed during the treatment and follow-up of other diseases. On radiological examination, 2 patients showed mass-like shadows, and the 3rd showed a cavitary lesion; fluorodeoxyglucose (FDG) -positron emission tomography showed high FDG accumulation in all the patients. One of the patients was pathologically suspected with lung cancer on transbronchial lung biopsy. Right upper lobectomy was performed in 2 patients, and right lower lobectomy in 1. One of the patients who underwent right upper lobectomy, also received chest wall resection because of the perioperative finding of chest wall invasion of lung cancer. Clinically, all the cases were preoperatively diagnosed as lung cancer.

Acne inversa complicated by Actinomyces neuii

INTRODUCTION

Acne inversa (AI) is a chronic and recurrent inflammatory skin disease. It occurs in intertriginous areas of the skin and causes pain, drainage, malodor and scar formation. While supposedly caused by an autoimmune reaction, bacterial superinfection is a secondary event in the disease process.

METHODS

A unique case of a 43-year-old male patient suffering from a recurring AI lesion in the left axilla was retrospectively analysed.

RESULTS

A swab revealed Actinomyces neuii as the only agent growing in the lesion. The patient was then treated with Amoxicillin/Clavulanic Acid 3 × 1 g until he was cleared for surgical excision. The intraoperative swab was negative for A. neuii. Antibiotics were prescribed for another 4 weeks and the patient has remained relapse free for more than 12 months now.

CONCLUSION

Primary cutaneous Actinomycosis is a rare entity and the combination of AI and Actinomycosis has never been reported before. Failure to detect superinfections of AI lesions with slow-growing pathogens like Actinomyces spp. might contribute to high recurrence rates after immunosuppressive therapy of AI. The present case underlines the potentially multifactorial pathogenesis of the disease and the importance of considering and treating potential infections before initiating immunosuppressive regimens for AI patients.

An Unusual Cause of a Pulmonary Mass: Actinomycosis

We present the case of a 62-year-old male with chronic obstructive pulmonary disease and poorly controlled diabetes mellitus who presented with haemoptysis. A radiograph of the chest showed a right lower parahilar opacity which on the contrast enhanced computed tomography was seen to be an irregular, spiculated mass localised to the middle lobe. Considering malignancy as the most probable diagnosis, a bronchoscopic endobronchial biopsy was performed which surprisingly established pulmonary actinomycosis as the diagnosis. The patient was successfully managed with amoxicillin and clavulanic acid and glycaemic control.

[How is agonizing leg pain associated with an intrauterine device?]

We report on a typical clinical course of pelvic actinomycosis: initial uncharacteristic discomfort develops into a systemic illness associated with a pelvic mass, which progresses so fast that along with the systemic infection further symptoms can be reduced to its growth rate--tiredness, abdominal pain, micturition deficiency, and leg pain. Distinction between malignancy and pelvic actinomycosis could be made only intraoperative. After hysterectomy and with antibiotics the patient recovered quickly.

Actinomycotic endocarditis of the eustachian valve: a rare case and a review of the literature

Eustachian valve endocarditis caused by Actinomyces species is extremely rare. A literature review revealed only one reported case-caused by Actinomyces israelii in an intravenous drug abuser. Our patient, a 30-year-old woman who at first appeared to be in good health, presented with fever, a large mobile mass on the eustachian valve, and extensive intra-abdominal and pelvic masses that looked malignant. Histopathologic examination of tissue found in association with an intrauterine contraceptive device revealed filamentous, branching microorganisms consistent with Actinomyces turicensis. This patient was treated successfully with antibiotic agents. In addition to presenting a new case of a rare condition, we discuss cardiac actinomycotic infections in general and eustachian valve endocarditis in particular: its predisposing factors, clinical course, sequelae, and our approaches to its management.

Actinomycotic osteomyelitis of the cranial vault presenting with headache: an unusual presentation

A case of left parietal calvarial actinomycotic osteomyelitis in a young woman is described. She had no predisposing illnesses. She had delivered a live child at term and presented in the puerperal period. No extracranial focus of infection was identified. She responded well to a combination of surgery and medical therapy and had an excellent outcome. The authors emphasise the importance of establishing a histopathological diagnosis since radiological signs are non-specific and unreliable.

Hepatic actinomycosis: Report of one case and analysis of 32 previously reported cases

Hepatic actinomycosis is rare, with few published cases. There are no characteristic clinical manifestations, and computed tomography (CT) shows mainly low-density images, making clinical diagnosis difficult, and leading to frequent misdiagnosis as primary liver cancer, metastatic liver cancer or liver abscess. Diagnosis normally requires examination of both the aetiology and pathology. This article reports one male patient aged 55 who was hospitalized because of repeated upper abdominal pain for more than 2 mo. He exhibited no chills, fever or yellow staining of the skin and sclera, and examination revealed no positive signs. The routine blood results were: haemoglobin 110 g/L, normal numbers of leukocytes and neutral leukocytes, serum albumin 32 g/L, negative serum hepatitis B markers and hepatitis C antibodies, normal tumour markers (alpha-fetoprotein and carcinoembryonic antigen). An abdominal CT scan revealed an 11.2 cm × 5.8 cm × 7.4 cm mass with an unclear edge in the left liver lobe. The patient was diagnosed as having primary liver cancer, and left lobe resection was performed. The postoperative pathological examination found multifocal actinomycetes in the hepatic parenchyma, which was accompanied by chronic suppurative inflammation. A focal abscess had formed, and large doses of sodium penicillin were administered postoperatively as anti-infective therapy. This article also reviews 32 cases reported in the English literature, with the aim of determining the clinical features and treatment characteristics of this disease, and providing a reference for its diagnosis and treatment.

Invasive actinomycosis: surrogate marker of a poor prognosis in immunocompromised patients

OBJECTIVES

Actinomycosis is a rare disease favored by disruption of the mucosal barrier. In order to investigate the impact of immunosuppression on outcome we analyzed the most severe cases observed in patients hospitalized in three tertiary care centers.

METHODS

We reviewed all cases of proven invasive actinomycosis occurring over a 12-year period (1997 to 2009) in three teaching hospitals in the Paris area.

RESULTS

Thirty-three patients (16 male) were identified as having an invasive actinomycosis requiring hospitalization. The diagnosis was made by microbiological identification in 26 patients, pathological examination in eight patients, and by both methods in one. Twenty patients (61%) were immunocompromised. Actinomycosis localization was abdominal or pelvic in 17 patients, thoracic in 11, cervicofacial in three, and neurological in two. Twenty patients (61%) underwent surgery. All strains were susceptible to amoxicillin. All patients were treated with a beta-lactam antibiotic, for a median length of 82 days. Twenty-eight patients (85%) were considered as cured. Overall mortality at hospital discharge was 21% (7/33). Mortality was higher in immunocompromised patients (7/20; 21%) compared to non-immunocompromised patients (0/13) (p=0.027). However, six of seven deaths were directly related to the underlying disease.

CONCLUSIONS

Actinomycosis is a cause of severe infection in immunocompromised patients and a surrogate marker of a poor prognosis in this specific population.

Actinomycosis of the pharynx

Few cases of pharyngeal actinomycosis have been documented in the literature. We describe the case of a 67-year-old white man who presented with symptoms of dysphagia. Laryngoscopy revealed a pedunculated mass in the left posterior pharyngeal wall; an excisional biopsy confirmed the diagnosis. Postoperatively, the patient underwent 10 weeks of intravenous penicillin therapy followed by 4 months of oral antibiotics, and his condition resolved. We discuss the diagnosis, management, and complications of this rare infection.

Thoracopulmonary actinomycosis, a case report of a 42-year-old man with coughing and a bump in his right axilla

The diagnosis of thoracopulmonary actinomycosis is challenging because it is a rare disease, symptoms are aspecific and can mimic a lot of other lung pathologies. Especially the differential diagnosis with pulmonary tuberculosis is difficult because clinical symptoms are often very similar. We present a case of thoracopulmonary abcedating actinomycosis in a young immunocompetent man with no predisposing illness. He was initially treated for pulmonary tuberculosis. He showed good response to IV penicillin, which was later switched to oral amoxicillin when he went home.

[Pulmonary actinomycosis that was difficult to make an accurate diagnosis]

A 35-year-old man was referred to our hospital, because of recurrent pneumonia. His chest X-ray film and computed tomography showed mass-like consolidation with a cavity in the right upper lobe. He underwent a bronchoscopic examination, but no diagnosis was established. Therefore a surgical biopsy was performed, but the pathological findings revealed that it was only an inflammatory change without any malignant component. For a while, antibiotic and the steroid treatment was continued resulting in the aggravation of clinical findings. Finally, an upper lobe excision was performed for the complete excision of the lesion. As a result of pathology, pulmonary actinomycosis was diagnosed.