|
|
 |
|
|
c13t3P1: in this example, the cells are “epithelioid” (rounded). The cells are variably pigmented. Nuclear grade is intermediate. Melanophages focally are clustered.
|
|
|
|
c13t3P2: in this lesion, the cells have “epithelioid” qualities, but are somewhat spindle shaped. Nuclear grade is intermediate.
|
|
|
|
c13t3P3: Nuclear grade is high. The cells have “epithelioid” qualities. The cells form fascicles with thin-walled vessels among the fascicles; the differential diagnosis might include metastatic carcinoma, such as renal cell carcinoma. The patterns are relatively solid.
|
|
|
|
c13t3P4: the lesion is fasciculated; the fascicles are broad; the cells are “epithelioid.” In the fascicles, the cells are loosely spaced. There is cellular pleomorphism with occasional multinucleated cells. Pigmentation is variable.
|
|
|
|
c13t3P5: the pattern is pleomorphic with loss of cellular cohesion. There are multinucleated tumor giant cells. Nuclear grade is high.
|
|
|
|
c13t3P6: in this field, the lesion shows papillary patterns.
|
|
|
|
c13t3P7: papillary patterns are a prominent feature; the papillae have fibrous fronds. Cellular pleomorphism is a prominent feature.
|
|
|
|
c13t3P8: this is another example of the intermediate pattern in which broad fascicles are loosely spaced in a fibrous matrix. Nuclei are hyperchromatic and show variations in size and orientation.
|
|
