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Case 174 - Discussion

Hematopathology Case

 

CD45

CD45

CD20

CD3

Cytokeratin

CD30

ALK

S100

HMB45

Mart1

 

Metastatic Melanoma

  • The tumor cells show diffuse, sheets of infiltration; and they are large, dyscohesive and pleomorphic with occasional plasmacytoid features. The major differential diagnoses include poorly differentiated carcinoma and lymphoma.

  • The patient had a remote history of melanoma.