Actinomycosis is a chronic, slowly progressive, and suppurative disease caused by filamentous anaerobic bacteria Actinomyces, which results in characteristic sulfur granules. Clinically, actinomycosis can present with a mass-like lesion, and this bacterial nidus has been frequently mistaken for a malignancy. For that reason many patients undergo surgical resection before the correct diagnosis is established. We report a case of a 63-year-old man with a solitary, asymptomatic pancreatic actinomycosis that masqueraded as pancreatic cancer. He did not have any other concurrently infected organs and did not have any signs or symptoms of infection. All radiologic images of the patient favored a malignancy to a great extent rather than an inflammatory mass. He was finally diagnosed with actinomycosis by endoscopic ultrasound (EUS)-guided fine needle aspiration biopsy without surgery. After one month of treatment with antibiotics, the pancreatic head mass was completely resolved on the follow-up computed tomography (CT).
Actinomyces ; Actinomycosis* ; Anti-Bacterial Agents ; Bacteria, Anaerobic ; Biopsy ; Biopsy, Fine-Needle ; Diagnosis ; Follow-Up Studies ; Head ; Humans ; Middle Aged ; Pancreas ; Pancreatic Neoplasms* ; Sulfur ; Ultrasonography

Tuberculosis rarely involves the esophagus, and most esophageal tuberculosis occurs secondary to adjacent tuberculous lymphadenitis. An esophago-mediastinal fistula is a very unusual complication of tuberculous lymphadenitis. Herein, we report a case of an esophago-mediastinal fistula due to tuberculous lymphadenitis. A 28-year-old woman who had dysphagia was assessed by chest computed tomography, endoscopy, esophagogram, and a lymph node biopsy. An esophago-mediastinal fistula was found and an antituberculous agent was considered initially. However, because of her severe dysphagia, she managed with endoscopic clipping as an alternative. However, the fistula remained on follow-up esophagography. A gastrostomy was eventually performed, and she was treated with an antituberculous agent. The fistula had closed after 4 weeks of medication. Antituberculous agents are the mainstay treatment for esophago-mediastinal fistula due to tuberculous lymphadenitis; endoscopic clipping may be a complementary treatment.
Adult ; Biopsy ; Deglutition Disorders ; Endoscopy ; Esophageal Fistula ; Esophagus ; Female ; Fistula* ; Follow-Up Studies ; Gastrostomy ; Humans ; Lymph Nodes ; Lymphadenitis* ; Thorax ; Tuberculosis ; Tuberculosis, Lymph Node