US Oncology Reports Fourth Quarter and Fiscal Year 20...(8 9793 2.4 Radiation treatmen...)

Radiation

treatments/

diagnostic

scans(2)(4) 3,680 3,522 4.5 3,622 1.6 3,642 3,530 3.2

Daily Same

Store

Statistics:

Medical

oncology

visits (1) 10,024 9,815 2.1 9,785 2.4 9,750 9,500 2.6

Radiation

treatments/

diagnostic

scans(2)(4) 3,463 3,425 1.1 3,457 0.2 3,436 3,373 1.9

Other

Statistics:

Radiation

oncology

facilities

(3)(4) 88 91 (3.3) 91 (3.3) 88 91 (3.3)

PET systems 34 33 3.0 36 (5.6) 34 33 3.0

New patients

enrolled in

research studies

during the

period 809 790 2.4 769 5.2 3,050 2,723 12.0

Accounts

receivable days

outstanding 33 38 (13.2) 36 (8.3) 33 38 (13.2)

Notes to Key Operating Statistics:

(1) Medical oncology visits include information for practices affiliated

under comprehensive service agreements only, and do not include the

results of OPS practices.

(2) Represents technology-based treatments, including IMRT treatments

and diagnostic scans, provided through our integrated cancer

centers.

(3) The fourth quarter of 2007 includes 77 integrated cancer centers and

11 radiation-only facilities while the third quarter of 2007

includes 80 integrated cancer centers and 11 radiation-only

facilities. The fourth quarter of 2006 includes 80 integrated

cancer centers and 11 radiation-only facilities.

(4) Radiation treatments/diagnostic scans and facilities do not include

cancer centers operated by unconsolidated joint ventures in which

the Company or an affiliated practice has a financial interest.

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