title: High Resolution Chest Computerized Tomography in the Diagnosis of Ocular Sarcoidosis in a High TB Endemic Population.
abstract: OBJECTIVE
  To review the role of high resolution chest computed tomography (HRCT) in ocular sarcoidosis in a high TB endemic population.
  
  
  METHODS
  This was a retrospective study.
  
  
  RESULTS
  Out of 140 cases, 54 had ocular sarcoidosis, while 86 cases had ocular tuberculosis. Abnormal HRCT findings was noted in 52 cases (96.3%) of ocular sarcoidosis compared with 55 cases (64.7%) of ocular tuberculosis (p = 0.001). Mediastinal lymphadenopathy was the most common finding in both groups (p = 0.544). Hilar lymphadenopathy and fissural nodules were significantly seen in ocular sarcoidosis (p = 0.001). Necrosis was seen in three cases of ocular sarcoidosis. In nearly half of the cases, it was not possible to differentiate between sarcoidosis and tuberculosis on HRCT.
  
  
  CONCLUSIONS
  HRCT is a useful diagnostic tool in ocular sarcoidosis. Bilateral hilar lymphadenopathy and fissural nodules are significant findings in ocular sarcoidosis. A confident diagnosis of ocular sarcoidosis is made by the amalgamation of results of clinical, radiologic, and other laboratory investigations.
authors.affiliation: a Vittala International Institute of Ophthalmology & Prabha Eye Clinic and Research Center , Bangalore , India.
authors.forename: Kalpana
authors.initials: K
authors.lastname: Babu
authors.affiliation: a Vittala International Institute of Ophthalmology & Prabha Eye Clinic and Research Center , Bangalore , India.
authors.forename: Sai Bhakti
authors.initials: SB
authors.lastname: Shukla
authors.affiliation: b Department of Biostatistics , National Institute of Mental Health Sciences , Bangalore , India.
authors.forename: Mariamma
authors.initials: M
authors.lastname: Philips
mesh_terms: D000328:Adult; D019353:Endemic Diseases; D005128:Eye Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007194:India / Q000453:epidemiology; D008297:Male; D008400:Mass Chest X-Ray; D008875:Middle Aged; D012189:Retrospective Studies; D012507:Sarcoidosis / Q000000981:diagnostic imaging* / Q000453:epidemiology; D014057:Tomography, X-Ray Computed / Q000379:methods; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging* / Q000453:epidemiology
keywords: HRCT; Hilar lymphadenopathy; ocular sarcoidosis; ocular tuberculosis; radiology