Orbits

• lacrimal IgG4-related disease
  30 September 2014

  IgG4-related disease to lacrimal gland lesions
  Open References
  Applying the consensus statement on the pathology of IgG4-related disease to lacrimal gland lesions. Andrew N, Kearney D, Selva D. Mod Pathol. 2013 Aug;26(8):1150-1. doi:10.1038/modpathol.2013.46 . PMID: #23903493# [Free]

• orbital meningoencephalocele
  12 January 2012

  Definition: Orbital meningoencephalocele is a rare congenital abnormality caused by a defect of the cranio-orbital bones that usually manifests soon after birth as a soft, cystic fullness in the superomedial canthal area with associated exophthalmos.
  An orbital approach may be appropriate for a few selected cases in which no bone defect is found on computed tomography.
  Orbital meningoencephalocele should be included in the differential diagnosis of isolated congenital conjunctival cystic (...)

• orbital giant cell reparative granuloma
  2 December 2009

  orbital giant cell granuloma;

• orbital giant cell fibroblastoma
  2 December 2009

  Giant cell fibroblastoma, a benign mesenchymal tumor of infancy, is rarely encountered within the orbital region. This lesion is considered to be a distinct, non-metastasizing tumor, but its clinical management may be very difficult, because of its invasive nature and potential for recurrence.
  Giant cell fibroblastoma is a phenotypic variant of dermatofibrosarcoma protuberans sharing the same COL1A1/PDGFB fusion gene.
  See also
  giant cell fibroblastoma
  References
  Orbital giant cell (...)

• orbital giant cell angiofibroma
  2 December 2009

  See also
  giant cell angiofibroma.
  References
  Orbital giant cell angiofibroma recurring as a solitary fibrous tumor. Zoumalan CI, Egbert PR, Warwar RE, McCulley TJ. Ophthal Plast Reconstr Surg. 2008. Jul-Aug;24(4):325-7. PMID: #18645449#
  Giant cell angiofibroma of the orbit with periosteal adherence. deSousa JL, Meligonis G, Malhotra R. Clin Experiment Ophthalmol. 2006 Dec;34(9):886-8. PMID: #17181622#
  Orbital giant cell angiofibroma: immuno-histochemistry and differential (...)

• brown tumor
  2 December 2009

  brown tumors of the bone
  Images
  brown tumor of PTH https://twitter.com/SurgPathAtlas/status/672495237894422528
  Synopsis
  chronic renal failure
  secondary hyperparathyroidism
  dense lesion, with fibrous proliferation associated with osseous metaplasia and osteoclastic activity in the tumor
  Localizations
  orbital brown tumor (#19347137#, #16855509#)
  Differential diagnosis
  giant cell tumor of bone
  References
  Multiple brown tumors of the orbital walls: case (...)

• orbital alveolar rhabdomyosarcoma
  14 October 2009

  See also
  rhabdomyosarcomas
  orbital tumors
  orbital rhabdomyosarcomas orbital alveolar rhabdomyosarcoma
  References
  Alveolar rhabdomyosarcoma presenting as an acute orbital mass in the medial rectus muscle. Ehlers JP, Penne RB, Eagle RC Jr, Carrasco JR. Ophthal Plast Reconstr Surg. 2007 Mar-Apr;23(2):149-51. PMID: #17413634#
  A case of alveolar rhabdomyosarcoma of the ethmoid sinus invading the orbit in an adult. Moon HS, Kwon SW, Lee JH. Korean J Ophthalmol. 2006 Mar;20(1):70-5. (...)

• orbital rhabdomyosarcomas
  14 October 2009

  Types
  orbital embryonal rhabdomyosarcoma
  orbital alveolar rhabdomyosarcoma
  Images
  Orbital rhabdomyosarcoma. Arrow points to eosinophilic strap cell with cross striations. https://twitter.com/neuropathology/status/735920709424160768
  See also
  rhabdomyosarcomas
  orbital tumors

• orbital desmoplastic small round cell tumor
  5 October 2009

  References
  Desmoplastic small round cell tumor: a potentially lethal neoplasm manifesting in the orbit with associated visual symptoms. Yoon M, Desai K, Fulton R, Bucci K, Russin M, Conway RM, O’Brien JM. Arch Ophthalmol. 2005 Apr;123(4):565-7. PMID: #15824236#

• orbital melanoma
  17 June 2009

  References
  Primary orbital melanoma treated with iodine-125 plaque radiotherapy. De Potter P, Levecq L, Godfraind C, Renard L. Am J Ophthalmol. 2006 Nov;142(5):864-6. PMID: #17056373#

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