Acute adverse effects depend on the area receiving radiation and may include Lethargy Fatigue Mucositis Dermatologic manifestations (erythema, pruritus, desquamation) Esophagitis Pneumonitis Hepatitis Gastrointestinal symptoms (nausea, vomiting, diarrhea, tenesmus) Genitourinary symptoms (frequency, urgency, dysuria) Bone marrow suppression Late complications Late complications of radiation therapy include cataracts, keratitis, and retina damage if the eye is in the treatment field.