NEUROECTODERMAL
TUMOURS, MIXED TUMOURS,
TERATOMAS,
CHORIONEPITHELIOMA.
XI. practical training
3rd year General Medicine
Oligodendroglioma
Melanocytic nevus
• junctional
• Compoud
• Dermal
Melanocytic nevus
Melanocytic nevus
Compound melanocytic nevus
copy
1 Junkční komponenta
2 Intradermální komponenta
3 Epidermis
3
1
2
Intradermal melanocytic nevus
copy
Intradermal melanocytic nevus
1
2
1 Normal skin
2 Naevus
3 Epidermis
4 Hair folicle
5 Sebaceous gland 3
4
5
Intradermal melanocytic nevus 1
2
1 Epidermis
2 Groups of melanocytes
3 Collagenous fibres of cutis
3
Intradermal melanocytic nevus
1
2
3
1 Hair folicle
2 Melanocytes
3 Collagenous fibres of cutis
Malignant melanoma
• Asymetry
• Borders irregularis
• Color
• Diameter
enlargement
• (Darkening)
Malignat melanoma
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
copy
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma
Melanin in tumour cells
(lentigo maligna melanom)
1
1
2
1 Melanin in tumour cells
2 Melanin fagocyted in
histiocytes (released from
tumour cells)
3 Keratinized layer of epidermis
3
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melan A)
Fibroadenoma mammae
Fibroadenoma mammae