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Flashcards in Orbit Volume 2 Deck (47)
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31

What is the most common location of orbital meningioma?

Optic nerve sheath

32

What condition is associated with orbital mass associated with "tram-tracking" on plain film x-ray?

Optic nerve sheath meningioma

33

What condition is associated with orbital mass with biphasic pattern of nuclear palisading and myxoid areas?

Schwannoma

34

What is the most common primary orbital malignancy of childhood?

Rhabdomyosarcoma (average age of onset between 8-10 years)

35

What is the most common type of rhabdomyosarcoma?

Embryonal (typically associated with superonasal quadrant of orbit)

36

What is the treatment of choice for patients with localized ocular adenexal lymphoproliferative disease?

Radiation

37

What condition is associated with patient with lytic bone lesions and recurrent ocular inflammation?

Histiocytosis

38

What is the most common epithelial tumor of the lacrimal gland?

Pleomorphic adenoma

39

What is the most common malignant tumor of the lacrimal gland?

Adenoid cystic carcinoma

40

What is the most common epithelial tumor secondarily invading the orbit?

Squamous cell carcinoma

41

What type of leukemia is most likely to metastasize to the orbit?

ALL

42

What is the most malignant form of rhabdomyosarcoma?

Alveolar

43

What is the most common primary source of orbital metastasis in women?

Breast cancer

44

What is the most common source of orbital metastasis in men?

Bronchogenic carcinoma

45

What type of rhabdomyosarcoma has the best prognosis?

Pleomorphic

46

What is the most common orbital neoplasm?

Fibrous histiocytoma

47

Following extraocular muscles, what is the most common site of metastatic tumor to the orbit?

Bone marrow of the sphenoid bone