title: CLINICALLY INVISIBLE RETINOBLASTOMA RECURRENCE IN AN INFANT.
abstract: OBJECTIVE
  To report a case of clinically invisible retinoblastoma recurrence detected only on spectral-domain optical coherence tomography.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 3-week-old girl with bilateral familial retinoblastoma underwent six cycles of intravenous chemoreduction. Both eyes showed tumor regression. After 6 cycles of chemoreduction, the tumor in the right eye appeared with clinical regression; however, by spectral-domain optical coherence tomography, there was 40 μm increase in thickness and 290 μm increase in basal diameter. Due to tumor proximity of 1.85 mm to the foveola, the recurrence was treated via intraarterial chemotherapy with two cycles of Melphalan 3 mg. After treatment, spectral-domain optical coherence tomography showed complete regression of the recurrent tumor to a flat scar with intact fovea.
  
  
  CONCLUSIONS
  Precise submillimeter imaging with spectral-domain optical coherence tomography for monitoring retinoblastoma is important and can allow detection of early recurrences that might be clinically invisible otherwise, as well as surveillance of the fovea.
authors.affiliation: Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania.
authors.forename: Krystal
authors.initials: K
authors.lastname: Park
authors.forename: Kareem
authors.initials: K
authors.lastname: Sioufi
authors.forename: Carol L
authors.initials: CL
authors.lastname: Shields
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D019572:Retinal Neoplasms / Q000000981:diagnostic imaging*; D012175:Retinoblastoma / Q000000981:diagnostic imaging*; D041623:Tomography, Optical Coherence / Q000379:methods*