Ascaris lumbricoides Emerging from a PleurX Draining Catheter: An Unexpected Diagnosis

Introduction: Ascaris lumbricoides is a common helminthic infection characterized by fecal-oral route of transmission. Commonly, it affects the gastrointestinal tract. However, in significantly rare cases, it can affect unexpected body regions, such as biliary tree, pancreas, and the lung.Case presentation: A 68-year-old female patient underwent PleurX tube insertion due to malignant pleural effusion. On the third week of insertion, she complained of itching and pain at the site of insertion, a grayish-white worm was visualized at the insertion site. Ascaris lumbricoides was identified by microbiological examination. She received 400 mg of albendazole.Conclusion: Our case describes a rare clinical situation of pleural ascariasis, emphasizing the importance of remaining aware of this rare complication of ascariasis.