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Notes: | Notes: | ||
*''[[Malignant melanoma]]'', also ''melanoma'', is a separate category as it can look like almost anything under the microscope. | |||
*''Hematologic'' includes [[lymphoma]], [[leukemia]], [[plasma cell neoplasms]] and others. | |||
*The above is a useful clinical classification. The problem is it isn't that useful for difficult cases as: | *The above is a useful clinical classification. The problem is it isn't that useful for difficult cases as: | ||
**Germ cell tumours are often not distinctive. | **Germ cell tumours are often not distinctive. | ||
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**Spindle cell carcinomas can mimic sarcomas very well. | **Spindle cell carcinomas can mimic sarcomas very well. | ||
**Neuroendocrine differentiation is not always readily apparent. | **Neuroendocrine differentiation is not always readily apparent. | ||
Memory device ''HMN GEM'': hematologic, melanoma, neuroendocrine carcinoma, germ cell, epithelial, mesenchymal. | Memory device ''HMN GEM'': hematologic, melanoma, neuroendocrine carcinoma, germ cell, epithelial, mesenchymal. |
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