title: Orbital abscess with unusual features.
abstract: OBJECTIVE
  To report a series of 7 cases of orbital abscess with unusual features that may mimic other cystic orbital lesions.
  
  
  METHODS
  Retrospective study of all cases of orbital cellulitis/abscess treated at our center, over 1 year, highlighting cases with unusual features.
  
  
  RESULTS
  Thirty-one cases were studied, where orbital cellulitis/abscess was the final diagnosis. Of these, 7 patients did not have typical signs and/or symptoms of local infection. At presentation, there was no associated predisposing risk factor, indicating the source of infection. The duration of symptoms, among these 7 patients, ranged from 3 weeks to 6 months. The initial diagnosis was myocysticercosis in 3 cases, orbital dermoid in 1 case, lymphangioma in 1 case, pseudotumor in 1 case, and schwannoma in 1 case.
  
  
  CONCLUSIONS
  Unusual presentations of orbital abscess can mimic other conditions of the orbit. Orbital abscess should be considered in the differential diagnosis if a cystic lesion has not responded or partly responded to systemic antibiotics and there are associated signs or symptoms of intermittent or constant low-grade inflammation, even in the absence of predisposing risk factors.
authors.affiliation: Oculoplastics and Ocular Oncology Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
authors.forename: Neelam
authors.initials: N
authors.lastname: Pushker
authors.forename: Rachna
authors.initials: R
authors.lastname: Meel
authors.forename: Mandeep S
authors.initials: MS
authors.lastname: Bajaj
authors.forename: Seema
authors.initials: S
authors.lastname: Kashyap
authors.forename: Noornika
authors.initials: N
authors.lastname: Khuriajam
authors.forename: Sanjeev
authors.initials: S
authors.lastname: Gupta
authors.forename: Mahesh
authors.initials: M
authors.lastname: Chandra
mesh_terms: D000038:Abscess / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D015818:Eye Infections, Bacterial / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures; D009916:Orbital Diseases / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D012189:Retrospective Studies; D013203:Staphylococcal Infections / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D013211:Staphylococcus aureus / Q000302:isolation & purification*; D014057:Tomography, X-Ray Computed; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents