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NEUROECTODERMAL
TUMOURS, MIXED TUMOURS,
TERATOMAS,
CHORIONEPITHELIOMA.
XI. practical training
3rd year General Medicine
Neurinoma
copy
Neurinoma
Neurinoma
Neurofibroma
Neurofibroma
Pigmentary naevus
Pigmentary naevus
Patologic pigmentation of skin, defect of melanin -
vitiligo
1 Normal presence of melanin
in basal layer
2 Defect of melanin in basal layer
2
1
Patologic pigmentation of skin, defect of melanin –
vitiligo, impregnation of melaninu (Masson)
1 Normal presence of melanin in
in basal layer
2 Defect of melanin in basal layer
1 2
Mixed naevocellular naevus
1
2
1 Normal skin
2 Naevus
Mixed naevocellular naevus
1
2
1 Junctional component
2 Intradermal component
3 Epidermis
4 Rete ridges
1 3 4
Mixed naevocellular naevus
1
2
3
1 Junctional component
2 Intradermal component
3 Pigment (melanin)
4 Epidermis
4
Intradermal naevocellular naevus
1
2
1 Normal skin
2 Naevus
3 Epidermis
4 Hair folicle
5 Sebaceous gland 3
4
5
Intradermal naevocellular naevus
1
2
1 Epidermis
2 Groups of melanocytes
3 Collagenous fibres of cutis
3
Intradermal naevocellular naevus
1
2
3
1 Hair folicle
2 Melanocytes
3 Collagenous fibres of cutis
Malignant melanoma (melanoblastoma)
copy
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (melanoblastoma)
Malignant melanoma (Fontana)
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
Nodular melanoma
Meningeoma
Meningeoma
Astrocytoma
Astrocytoma
Oligodendroglioma
Ependymoma
Glioblastoma
Glioblastoma
Fibroadenoma mammae
Fibroadenoma mammae
Pleiomorphic adenoma (myxochondroepithelioma)
Nefroblastoma (Wilms‘ tumour)
Teratoma
Teratoma
Choriocarcinoma
Choriocarcinoma