Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated . . There is slight increased density in the left base but this is likely due to overlying soft tissue . The patient has had a right mastectomy and axillary node dissection . Since the previous examination a venous access device is present in satisfactory position . The heart is not enlarged . The osseous structures are normal for age .
    OUTPUT:
    
Asymmetric density in the left base is likely due to breast tissue . In the clinical setting of neutropenic fever , followup is advised