NEUROECTODERMAL

TUMOURS, MIXED TUMOURS,

TERATOMAS,

CHORIONEPITHELIOMA.

XI. practical training

3rd year General Medicine

Neurinoma

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Neurinoma

Neurinoma

Neurofibroma

Neurofibroma

Meningioma

Meningioma

Astrocytoma

Astrocytoma

Glioblastoma

Glioblastoma

Oligodendroglioma

Ependymoma

Melanocytic nevus

• junctional

• Compoud

• Dermal

Melanocytic nevus

Melanocytic nevus

Compound melanocytic nevus

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1 Junkční komponenta

2 Intradermální komponenta

3 Epidermis

3

1

2

Intradermal melanocytic nevus

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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)

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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)

Osteochondrom

Fibroadenoma mammae

Fibroadenoma mammae

Teratoma

Teratoma

Choriocarcinoma

Choriocarcinoma