title: Cavitary melanoma of the ciliary body. A study of eight cases.
abstract: OBJECTIVE
  The authors present the unique clinical features of cavitary uveal melanoma.
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Eight patients with cavitary uveal melanoma.
  
  
  METHODS
  The clinical, ultrasonographic, and histopathologic features of eight patients with cavitary melanoma of the ciliary body were studied.
  
  
  RESULTS
  In all eyes there was a brown ciliary body mass that blocked transmission of light on trans-scleral transillumination. Ocular ultrasonography revealed a large, single hollow cavity (unilocular "pseudocyst") in five cases and multiple hollow cavities (multilocular "pseudocyst") in three cases. The cavity occupied a mean of 55% of the entire mass thickness (range, 31%-79%). In five cases, a basal uveal mass was noted on ultrasonography. Four patients underwent tumor resection; one had enucleation, and three had 125I radioactive plaque treatment. In the five cases confirmed histopathologically, the cavitation was empty, contained erythrocytes, serous fluid, and/or pigment-laden macrophages. In no case was the cavity lined by necrotic tumor, endothelial cells, or epithelial cells.
  
  
  CONCLUSIONS
  Ciliary body melanoma can develop an intralesional cavity resembling an intraocular cyst. The presence of a solid mass at the base and a thick wall surrounding the cavity can assist in the differentiation of cavitary melanoma from benign cyst.
authors.affiliation: Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
authors.forename: N
authors.initials: N
authors.lastname: Lois
authors.forename: C L
authors.initials: CL
authors.lastname: Shields
authors.forename: J A
authors.initials: JA
authors.lastname: Shields
authors.forename: R C
authors.initials: RC
authors.lastname: Eagle
authors.forename: P
authors.initials: P
authors.lastname: De Potter
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002924:Ciliary Body / Q000000981:diagnostic imaging / Q000473:pathology*; D003560:Cysts / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008545:Melanoma / Q000000981:diagnostic imaging / Q000473:pathology*; D008875:Middle Aged; D012189:Retrospective Studies; D014463:Ultrasonography; D014604:Uveal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*