18th March 2024

A 67 year old male with a history of breast cancer presents to the emergency department with haematuria

A 67 year old male with a history of breast cancer presents to the emergency department with haematuria and light headedness when walking. He was recently started on cyclophosphamide two days ago. On examination, he is afebrile with a respiratory rate of 18, heart rate of 102, blood pressure 85/60 and visibly appears pale. A blood test reveals a neutrophil count of 1.2 * 10^9/L (normal range 2.0-7.0) and it is also noted that he is taking filgrastim. Which of the following best describes the cause of the presenting symptoms of the patient?

Select the SINGLE most appropriate option from the list below. Select ONE option only.