08-05-2021 shave biopsy left chest: Clark Level IV Melanoma
08-05-2021 shave biopsy left back: Clark Level II Melanoma
Question: How will you abstract?
- Single Primary
- Multiple Primary
2021 Cutaneous Melanoma Multiple Primary Rules
Rule M6 Abstract a single primary when synchronous, separate/non-contiguous tumors are on the same row in Table 2 in the
Equivalent Terms and Definitions. Tumors must:
- Have the same site code AND
- Have the same laterality
Note: The same row means the tumors are:
- The same histology (same four-digit ICD-O code) OR
- One is the preferred term (column 1) and the other is a synonym for the preferred term (column 2) OR
- A NOS (column 1/column 2) and the other is a subtype/variant of that NOS (column 3)
Example 1: Both lesions are located on the right side of the body and sites are chest C445 and back C445. Histology for the chest lesion is melanoma, NOS (8720/3) and the back lesion is nodular melanoma (8721/3). Abstract a single primary. Refer to illustration.
Example 2: Both lesions are located on the left leg. One lesion is spindle cell melanoma (8772/3) located on the front of the left hip C447. The other lesion is spindle cell melanoma (8772/3) located on the front of the left thigh C447. Refer to illustration.