Ophthalmologic Manifestations of Kaposi Sarcoma Clinical Presentation
- Author: Jacqueline Freudenthal, MD; Chief Editor: Hampton Roy, Sr, MD more...
Identify risk factors for Kaposi sarcoma. The clinician should ask about the following:
Previous skin lesions
Previous treatment for Kaposi sarcoma
History of opportunistic infections
Current medication use
Symptoms of Kaposi sarcoma include the following:
Recurrent red or bloody eyes
Irritation and foreign body sensation
Heavy or swollen eyelids
Cosmetic disfigurement of the eyelids
Eyelashes rubbing against the eyes
Inability to close the eyes
Full ocular examination should include the following:
Inspect and evert the eyelids and lashes
Perform slit lamp biomicroscopy
Examine palpebral and bulbar conjunctivae and fornices in detail
Palpate the lacrimal gland, and examine for masses
Examine both eyes for proptosis in the rare likelihood of orbital involvement; fortunately, intraocular Kaposi sarcoma has never been reported
The lesions are purplish-red to bright-red and highly vascular with surrounding telangiectatic vessels. They may be macular, plaquelike, or nodular. Ophthalmic Kaposi sarcoma lesions are found on the eyelids, conjunctiva, caruncle, and lacrimal sac. They rarely are found inside the orbit (1 case of choroidal involvement).
See the image below.
Dugel et al described 3 clinical stages that may help direct therapy. Stage I and II tumors are patchy and flat. These lesions have a thickness of less than 3 mm in vertical height and are younger than 4 months. Stage III tumors are nodular and elevated with a vertical height of greater than 3 mm. They tend to be older than 4 months.
Of ophthalmic Kaposi sarcoma cases, 6-16% are eyelid lesions, and the superior and inferior eyelids tend to be involved equally. Of ophthalmic Kaposi sarcoma cases, 7-18% are conjunctival lesions. Many conjunctival lesions tend to involve the inferior conjunctiva (as is shown in the image below) and fornix.
Lesions tend to be indolent, but, as the tumor grows, it can alter ocular adnexal structures and the ocular surface. The mass effect of the tumor on the eyelids can cause mechanical ectropion or entropion with trichiasis and lagophthalmos and irregular astigmatism. Ectropion or entropion can result in poor lid apposition, trichiasis, and lagophthalmos. Consequently, the patient may experience epiphora, poor tear clearance and drainage, recurrent corneal abrasions, pain and discomfort, foreign body sensation, dry eyes, and photophobia. Long-standing trichiasis and exposure can result in corneal infection, scarring, and opacification.
Rarely, tumor bulk may block the visual axis by ptosis or direct obstruction. Tumor bulk may even prevent the complete closure of the eyelid.
Conjunctival involvement may present with subconjunctival hemorrhage, injection, and chemosis.
Human herpesvirus-8 (HHV-8) DNA or Kaposi sarcoma–associated herpesvirus (KSHV) has been implicated with patients who are HIV-negative or HIV-positive.
Homosexual males with HIV infection are at an increased risk. This risk is markedly increased with the number of partners.
Patients who have had organ transplants and use immunosuppressive agents and steroids are at an increased risk.
Elderly males of Mediterranean or Ashkenazi ancestry are at an increased risk.
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