title: A mediastinal mass resembling lymphoma: an unusual manifestation of probable case of invasive zygomycosis in an immunocompetent child.
abstract: A 2-year-old girl presented with prolonged fever and progressive dyspnea for 3 weeks. A chest radiograph revealed a left lung infiltrate and associated pleural effusion. Echocardiography revealed a large posterior mediastinal mass extending to the left atrial wall and massive pericardial effusion. The presumptive diagnosis was lymphoma. At operation, a large brownish-yellow mass was noted at the posterior mediastinum, with matted hilar, and subcarinal lymph nodes. Pericardial and pleural effusions with left lung consolidation were also noted. Histopathological examination of biopsy specimens revealed a granulomatous inflammatory reaction with a diffuse eosinophilic infiltrate and broad septated fungal hyphae with right angle branching compatible with zygomycosis. Surgical removal of the mass could not be performed due to the adjacent great vessels and carina. She subsequently died from airway obstruction and respiratory failure ten days later.
authors.affiliation: Division of Infectious Diseases, Department of Pediatrics, Faculty of Medicine, Chiang Mai University, 110 Intawaroros, Muang, Chiang Mai 50200, Thailand. tputhana@mail.med.cmu.ac.th
authors.forename: Thanyawee
authors.initials: T
authors.lastname: Puthanakit
authors.forename: Yupada
authors.initials: Y
authors.lastname: Pongprot
authors.forename: Thirasak
authors.initials: T
authors.lastname: Borisuthipandit
authors.forename: Pannee
authors.initials: P
authors.lastname: Visrutaratna
authors.forename: Suphachai
authors.initials: S
authors.lastname: Chuaratanaphong
authors.forename: Neelaya
authors.initials: N
authors.lastname: Sukhamwang
authors.forename: Kamthorn
authors.initials: K
authors.lastname: Thamprasert
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D016867:Immunocompromised Host; D008223:Lymphoma / Q000175:diagnosis*; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D020096:Zygomycosis / Q000175:diagnosis*