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SEER Inquiry System - Report
Produced: 11/26/2024 7:20 AM
Question 20160054
Inquiry Details
References:
2007 MP/H Rules
Question:
MP/H Rules/Multiple primaries--Melanoma: How many melanoma primaries should be abstracted if, during the workup for a metastatic melanoma of an unknown cutaneous site, an in situ melanoma is also discovered? See Discussion.
Discussion:
Patient has diagnosis of melanoma with spindle cell features found in a right lower lobectomy specimen. Chart notes indicate this is metastatic from a cutaneous primary of unknown site. Further work up includes a biopsy of the tip of the nose, which is diagnostic for in situ melanoma. Should this be abstracted as two separate primaries, one for an invasive melanoma of unknown primary site and the other for an in situ melanoma of the skin on the tip of the nose? Which MP/H Rule would apply?
Answer:
Yes, abstract this as two separate primaries, an invasive melanoma of unknown primary site and an in situ melanoma of the skin on the tip of the nose. Rule M3 applies.
