Myanmar Health Sciences Research Journal
Volume 28, Number 2
TITLE: Common Clinical Spectrum, Risk Factors and Fungal Isolates of Otomycosis
AUTHOR: Tin Zar Khaing, Khin Saw Myint, Khin Khin Mu & Win Win Maw
SOURCE: Myanmar Health Sciences Research Journal
ABSTRACT: A total of 4640 patients with ear problems were evaluated in this study. Among them, 760 patients (16.38%) were diagnosed as otitis externa, of which 100 patients (13.16%) were clinically suspected otomycotic patients. The ear swabs from 100 clinically suspected otomycotic patients from Ear, Nose and Throat, Out-Patient Department (OPD) of North Okkalapa General and Teaching Hospital and OPD of Ear, Nose and Throat Specialist Hospital, Yangon were collected and were examined for fungal species at the Mycology Section, National Health Laboratory, from the period of January to September, 2014. Out of 100 specimens taken from clinically suspected cases, 83 specimens (83%) yielded positive fungal culture, only 2 cases (2%) yielded bacterial growth and 15 cases (15%) showed no growth. The highest incidence was found to be in the age group between 41 and 50 years (n=19, 22.9%) followed by the age group between 21-40 years (n=18, 21.7). The incidence was found to be lowest (n=2, 2.4%)in the age group less than 10 years. The dominant role of unilateral otomycosis with a slight preponderance of left sided involvement was seen (60.2% vs. 39.8%). Fifteen patients (18.1%) were in association with tympanic membrane perforation. Predisposing factors contributing to otomycosis were self-cleaning of ear (90.4%), water entry in the ear (68.7%), chronic suppurative otitis media (16.9%) and foreign body in the ear (1.2%). The fungal pathogens isolated were Aspergillus species (63/83, 75.87%), Candida species (17/83, 20.44%), Cladosporium species (2/83, 2.40%) and Mucor species (1/83, 1.20%). Single fungus was isolated from 87.87% (n=73) of fungal culture positive cases and two fungi were isolated from 12.05% (n=10) of cases.
SUBJECT HEADINGS: Otomycosis, Yeast, Mold