system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 22-year-old man comes to the physician because of several episodes of painless bloody urine over the past 6 months. The episodes are not related to physical activity. He has had frequent nosebleeds since early childhood and an episode of heavy bleeding after a tooth extraction one year ago. He smokes one pack of cigarettes daily. He drinks 1 to 2 beers on social occasions. He appears pale. His vital signs are within normal limits. Physical examination shows several small hematomas in different stages of healing over his arms and legs. Examination of the extremities shows decreased passive range of motion with crepitus in both ankles. His abdomen is soft and nontender. Laboratory studies show:
Hemoglobin 9.5 mg/dL
Leukocyte count 5000/mm3
Platelet count 240,000/mm3
Bleeding time 5 minutes
Prothrombin time 14 seconds
Partial thromboplastin time 68 seconds
Urine
RBC 30–40/hpf
RBC casts negative
WBC none
Protein negative
An x-ray of the pelvis shows no abnormalities. Further evaluation of this patient is most likely to show which of the following findings?"
assistant
Intraarticular iron deposition