RADIATION THERAPY LATEST EXAM TEST 2026/2027
QUESTIONS AND SOLUTIONS RATED A+
✔✔Radiation sensitivity - ✔✔Rapidly dividing and poorly differentiated cells are more
radiosensitive.
✔✔Oxygen effect in radiation - ✔✔Oxygen enhances radiation-induced DNA damage.
✔✔Radiation resistance - ✔✔Hypoxic tumors and slow-growing cells are less sensitive
to radiation.
✔✔Acute radiation side effects - ✔✔Occur during or shortly after treatment.
✔✔Common acute radiation toxicities - ✔✔Fatigue, skin erythema, mucositis, nausea,
diarrhea.
✔✔Radiation dermatitis - ✔✔Skin inflammation ranging from erythema to
desquamation.
✔✔Management of radiation dermatitis - ✔✔Gentle skin care, moisturizing, avoiding
friction and sun exposure.
✔✔Mucositis - ✔✔Painful inflammation of mucosal lining caused by radiation.
✔✔Late radiation side effects - ✔✔Occur months to years after therapy.
✔✔Common late radiation toxicities - ✔✔Fibrosis, strictures, organ dysfunction,
secondary malignancies.
✔✔Radiation-induced fibrosis - ✔✔Chronic scarring of tissues within radiation field.
✔✔Secondary malignancy risk - ✔✔Caused by radiation-induced DNA damage years
after exposure.
✔✔Radiation to head and neck - ✔✔Commonly causes xerostomia, mucositis,
dysphagia.
✔✔Radiation to chest - ✔✔Pneumonitis and esophagitis are potential complications.
✔✔Radiation pneumonitis - ✔✔Inflammatory lung reaction occurring weeks to months
after radiation.
✔✔Radiation to abdomen and pelvis - ✔✔May cause nausea, diarrhea, cystitis, or
proctitis.
QUESTIONS AND SOLUTIONS RATED A+
✔✔Radiation sensitivity - ✔✔Rapidly dividing and poorly differentiated cells are more
radiosensitive.
✔✔Oxygen effect in radiation - ✔✔Oxygen enhances radiation-induced DNA damage.
✔✔Radiation resistance - ✔✔Hypoxic tumors and slow-growing cells are less sensitive
to radiation.
✔✔Acute radiation side effects - ✔✔Occur during or shortly after treatment.
✔✔Common acute radiation toxicities - ✔✔Fatigue, skin erythema, mucositis, nausea,
diarrhea.
✔✔Radiation dermatitis - ✔✔Skin inflammation ranging from erythema to
desquamation.
✔✔Management of radiation dermatitis - ✔✔Gentle skin care, moisturizing, avoiding
friction and sun exposure.
✔✔Mucositis - ✔✔Painful inflammation of mucosal lining caused by radiation.
✔✔Late radiation side effects - ✔✔Occur months to years after therapy.
✔✔Common late radiation toxicities - ✔✔Fibrosis, strictures, organ dysfunction,
secondary malignancies.
✔✔Radiation-induced fibrosis - ✔✔Chronic scarring of tissues within radiation field.
✔✔Secondary malignancy risk - ✔✔Caused by radiation-induced DNA damage years
after exposure.
✔✔Radiation to head and neck - ✔✔Commonly causes xerostomia, mucositis,
dysphagia.
✔✔Radiation to chest - ✔✔Pneumonitis and esophagitis are potential complications.
✔✔Radiation pneumonitis - ✔✔Inflammatory lung reaction occurring weeks to months
after radiation.
✔✔Radiation to abdomen and pelvis - ✔✔May cause nausea, diarrhea, cystitis, or
proctitis.
