Actinomycosis is a rare and slowly progressive infectious disease that can affect a variety of organ systems including the lung. It is caused by filamentous Gram-positive anaerobic bacteria of the genus Actinomyces. Despite its rarity, pulmonary actinomycosis can involve lung parenchyma, bronchial structures, and chest wall. The disease can mimic lung malignancy given its nonspecific clinical a...

Rationale: Osteoma with actinomycosis is a very rare disease in the nasal cavity. Patient concerns:We report a case of a 17-year-old female student who presented with nasal obstruction and rhinorrhea for 6 months. Diagnoses: The preoperative finding was osteoma covered with yellowish polypoid material. Interventions:We performed endoscopic sinus surgery, which included excision of the tumor and...

A 30-year-old Chinese lady was admitted for hoarseness of voice of one month's duration. Clinical examination revealed a granuloma of the left vocal cord while chest X-ray showed an opacity in the lower lobe of the right lung. The provisional clinical diagnosis was tuberculous laryngitis. A biopsy of the vocal cord lesion revealed inflamed tissue with actinomycotic colonies. Cultures and sputum...

Actinomycosis is a rare disorder caused by an anaerobic gram-positive bacillus (Actinomyces), predominantly by the Actinomyces israelii species. Only 20% of cases show an abdominal manifestation, the appendix and ileocecal valve being the most frequent locations. Definitive diagnosis is based on microbiological cultures, microscopy or macroscopy examination. Nevertheless, histological examinati...

Pelvic actinomycosis is an uncommon, slowly progressing granulomatous infection that has been associated with the presence of intrauterine devices. Due to its unspecific clinical and radiologic findings, it can mimic pelvic or intra-abdominal malignancy leading to mutilating surgery of high morbidity. Rarely, diagnosis is made preoperatively and in most cases surgical intervention is necessary....

Abdominal actinomycosis may appear as an abdominal mass and/or abscess. This mass can mimic a malignant tumour. The diagnosis and management of abdominal actinomycosis will be discussed through a review of the literature and a case report from our own institution. The patient was a 17-year-old boy who presented with abdominal discomfort and a palpable right lower quadrant mass defined on CT sca...

Primary vesical actinomycosis is an extremely rare disease. In most cases it is misdiagnosed as vesical or urachal tumor and usually diagnosed through post-operative pathologic confirmation. Here we report a case of primary vesical actinomycosis confirmed by preoperative repeated multiple transabdominal biopsies. The patient was a 49-yr-old woman who presented with frequency, dysuria, and inter...

Actinomycosis caused by Actinomyces spp. is a chronic and suppurative infection caused by an endogenous gram positive bacterium. The unusual sites of infection are the head and neck, thorax and abdomen and are almost always endogenous in origin. Primary cutaneous actinomycosis is very rare and is usually associated with external trauma and local ischemia. We report a case of a primary cutaneous...

A previously healthy 73-year-old man was hospitalized with left complicated effusion and a consolidation in the left upper lung. He underwent a chest tube insertion and was treated with clindamycin but the consolidation remained after the treatment. We subsequently performed flexible bronchoscopy but it was impossible to make a diagnosis. Three months later, the consolidation had worsened so we...

Actinomyces Israeli is found to be generally involved with cervicofacial (60%), followed by abdominopelvic (25%) and thoracic (15%) region. However, urachal actinomycosis is an extremely rare occurrence, represented by limited cases. This report described a 41-year-old man infected with Actinomyces Israeli who underwent partial cystectomy. Histological examination showed the typical colony whic...