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45. Nodular melanoma: Difference between revisions

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* Sun exposure
* Sun exposure
[[File:Nodular melanoma - melanin.png|thumb|Tumour cells containing melanin]]'''Theory''':
[[File:Nodular melanoma - melanin.png|thumb|Tumour cells containing melanin|274x274px]]'''Theory''':


The presence of tumor cells in the epidermis is essential to establish the diagnosis of ''primary'' melanoma. If there were no tumor cells there the lesion could have been a melanoma metastasis rather than the primary tumor.
The presence of tumor cells in the epidermis is essential to establish the diagnosis of ''primary'' melanoma. If there were no tumor cells there the lesion could have been a melanoma metastasis rather than the primary tumor.
[[File:Nodular melanoma - atypia.png|thumb|Severe atypia, or even anaplasia|left]]
[[File:Nodular melanoma - atypia.png|thumb|Severe atypia, or even anaplasia|left]]
[[File:Nodular melanoma - epidermis.png|thumb|Tumour cells in the epidermis]]
[[File:Nodular melanoma - epidermis.png|thumb|Tumour cells in the epidermis|273x273px]]
[[Category:Pathology 2 - Histopathology slides]]
[[Category:Pathology 2 - Histopathology slides]]