Correct Answer: D

Rationale: Mucositis is a common side effect of radiation therapy that should be closely monitored.

Correct Answer: B

Rationale: Hematuria, or blood in the urine, is the most common and distinctive symptom associated with bladder cancer. It can present as either gross hematuria (visible blood) or microscopic hematuria (detected only through urinalysis). The presence of blood in the urine often prompts further evaluation for potential underlying causes, including bladder cancer. It is crucial for healthcare providers to recognize this symptom, as early detection significantly impacts treatment outcomes.

Correct Answer: A

Rationale: In patients with multiple myeloma, hypercalcemia is a common complication due to the release of calcium from the bones as a result of osteolytic lesions. One of the early symptoms of hypercalcemia is polyuria, or increased urine output. This occurs because elevated calcium levels can lead to impaired renal function and increased renal excretion of calcium, which results in increased urine production. Early recognition of polyuria can help prompt further evaluation and management of hypercalcemia, as untreated hypercalcemia can lead to more severe complications.

Correct Answer: B

Rationale: An increased lymphocyte count (lymphocytosis) is always present in patients with CLL.

Correct Answer: D

Rationale: Abdominal distention is a common symptom in advanced ovarian cancer due to several factors, including the accumulation of ascites (fluid in the abdominal cavity) and the presence of tumors that can increase abdominal girth. As the disease progresses, the pressure from growing masses or fluid buildup can lead to noticeable swelling and discomfort in the abdomen. This symptom often prompts further evaluation and can significantly impact the patient's quality of life.