Procedure:
Core needle biopsy
Endoscopic biopsy
Other (specify):
Not specified

Specimen Size:
   Greatest dimension: cm
   Additional dimensions: cm
   Cannot be determined (see Comment)

Tumor Site:

Tumor Size:
       Greatest dimension: cm
       Additional dimensions: cm
       Cannot be determined (see Comment)

GIST Subtype:
    Spindle cell
    Epithelioid
    Mixed
    Other (specify):

Mitotic Rate
/50 high-power fields (HPF)

Note: The required total count of mitoses is per 5 mm2 on the glass slide section. With the use of older model microscopes, 50 HPF is equivalent to 5 mm2. Most modern microscopes with wider 40X lenses/fields require only 20 HPF to embrace 5 mm2. If necessary please measure field of view to accurately determine actual number of fields required to be counted on individual microscopes to count 5 mm2.

Necrosis:
    Not identified
    Present, Extent: %
    Cannot be determined

Histologic Grade:
GX: Grade cannot be assessed
G1: Low grade; mitotic rate <5/50 HPF
G2: High grade; mitotic rate >5/50 HPF

Risk Assessment:
None
Very low risk
Low risk
Intermediate risk
High risk
Overtly metastatic
Cannot be determined

Distant Metastasis:
Cannot be assessed
Distant metastasis ()

Additional Pathologic Findings:

Ancillary Studies:
   Immunohistochemical Studies:
       KIT (CD117):
        Positive
        Negative
       Others (specify):
       Not performed
   Molecular Genetic Studies (eg, KIT or PDGFRA mutational analysis):
    Submitted for analysis; results pending
    Performed, see separate report:
    Performed Specify method(s) and results:
    Not performed
   Prebiopsy Treatment:
       No therapy
       Systemic therapy performed:
       Therapy performed, type not specified
       Unknown

Treatment Effect: Percentage of viable tumor: %

Comment(s):