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Abstract Trichobezoars are hairballs in the gastrointestinal tract that usually develop due to the consumption of hair after pulling it. However, some rare case reports suggest that trichobezoar can also occur in the respiratory system. In this context, we present an unusual case of a 25‐year‐old woman who experienced dyspnea, productive cough, and leukocytosis. The patient was found to have a trichobezoar in her respiratory tract, accompanied by the presence of hair in her digestive tract.

Abstract We report a 52‐year‐old patient with a history of breast cancer (BC) referred to the clinic of Afzalipour Hospital, in Kerman, eastern Iran, with a 1‐week complaint of restless dyspnea. A chest computed tomography scan revealed consolidations in the upper lobes of both lungs. The patient had no history of smoking or underlying diseases that would predispose her to consolidation, including pneumonia. Then, bronchoscopy was performed for the patient, and bronchoalveolar lavage fluid was sent to the Iranian National Registry Center, where the Lophomonas parasite was detected in the sample and confirmed using a polymerase chain reaction test. Finally, her symptoms improved by receiving oral metronidazole three times a day for 3 weeks.

Abstract Mucormycosis is a fungal infection that can affect a variety of organs, one of which being the respiratory system. The most common form of infection with mucormycetes is pulmonary mucormycosis, which has a poor prognosis if infected. The clinical signs and radiological findings of this infection are non‐specific and very similar to lung tumours. Here, we describe a 62‐year‐old obese man with uncontrolled diabetes mellitus who was referred for a tumour‐like mass in the left lung, which after bronchoscopy was diagnosed as mucormycosis.

Abstract Immunocompromised patients are frequently more susceptible to pathogens such as protozoa. For the first time, we report a case of pulmonary lophomoniasis in a known case of acute myeloid leukaemia (AML‐2) from Qeshm Island, Persian Gulf, southern Iran. Diagnosis of lophomoniasis was confirmed using microscopy and molecular examinations of bronchoalveolar lavage fluid. She was completely treated with metronidazole (500 mg three times a day for 3 weeks). We conclude that immunocompromised patients with unjustified respiratory disorders should be screened for Lophomonas infection.