The standardized patient: 50 yr. old asymptomatic male, status post Mohs surgical resection with negative margins of a 1.0 cm well differentiated CSSC of the medial cheek that is confined to the dermis.

You receive the following additional information^a:

% ROs recommending PORT

95% CI

1. Pathology: Tumor is 1.0 cm with mPNI.

43

0.37 - 0.48

2. As in #1, but patient had a renal transplant and is on immunosuppressive medications.

61

0.56 - 0.67

3. sPNI: As in #1, but extends deep along a non-named subcutaneous nerve and required a third Mohs stage for clearance. Post-op MRI: clear.

74

0.69 - 0.79

4. cPNI: As in #1, but pre-op exam revealed numbness along V2 distribution. Post-op MRI: clear.

87

0.82 - 0.90

5. nPNI: Tumor is 1.0 cm with PNI involving the infraorbital nerve. Required excision through infraorbital foramen. Patient is asymptomatic. Post-op MRI: clear.

96

0.93 - 0.98

6. cPNI: As in #5, AND Pre-op exam showed numbness along V2. Post-op MRI: clear.

98

0.95 - 0.99

7. cPNI: As in #6, AND Post-op MRI shows thickening/enhancement of infraorbital nerve (V2) up to the foramen rotundum.

99

0.97 - 0.99