Transcript 08 Epithelial Tumors

Tumors of epithelial tissue.
Melaninformation tumors.
Teratomas.
As.-prof. V.Voloshyn
In Accordance with prof. Ya.Ya. Bodnar
Tumours

A tumour is a typical pathological process. It
is characterized by potential boundlessness
of uncontrolled growth, and also atypical cells
and tissues and ability to pass these
properties to future generations of cells on
heredity.
Ephithelial tumours
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Depending on a hystogenesis distinguish
tumours from an integumentary
epithelium (multi-layered flat and
transitional) and ferrous. According to
motion and differentiation ephithelial
tumours are benign and malignant.
Depending on organ specificity select
specificity organonspecificity and
ephithelial tumours without specific
localization.
Benign integumentary epithelium
tumours without characteristic
localization
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- villomas (papilomas) meet in a skin,
larynx, urinary bladder and others like
that, from ferrous epithelium. Adenomas
meet in all ferrous organs. They call the
followings morphological variants of
adenomas: acinous (alveolar), tubular,
trabecular, solid, nipple cystadenomas,
villiferous adenoma, fibroadenoma.
Malignant ephithelial tumours

have name cancer or carcinoma. They
distinguish the followings forms of cancer
without specific localization: flatcells
cancer which develops from multi-layered
flat epithelium and meets in the proper
tissues or in mucuses, where a flatcells
metaplasia took place.
Flatcells cancer
Adenocarcinoma
Brainy cancer and skyr
Tumours of melaninproducing
tissue
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develop from the cells of neuroektodermal
origin – melanocytes, which are in the basal
layer of epidermis, hair follicles,
leptomeninges and retina. Melanocytes can
be the source of tumular formations – nevus
and malignant tumours – melanomas.
Tumours of melaninproducing
tissue
Properties of tumours
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unlimitedness of growth;
boundlessness of growth;
uncontrolled of growth;
cells anaplasia.
Types of anaplasia (kataplasia)
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morphological;
biochemical;
physical and chemical;
immunological.
Etiology of tumours
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It is set, the tumours can be caused by
physical, chemical and biological agents,
which are named carcinogens.
Over 75% cancers diseases at people are
caused by the factors of external
environment and in the first order – by
chemical compounds.
Macroscopic forms of tumours
Forms of tumours growth
FORMS OF TUMOURS
GROWTH
expansive
appositional
infiltrative
endofits
exofitus
Forms of tumours growth
Forms of tumours growth
Infiltrative and expansive growth
Ways of the tumours metastases
Ways of the tumours metastases
MIXT
Haematogenic
Lymphogenic
Perineural
Implantogenic
Metastases
Description of benign and malignant
tumours
Benign
Malignant
Have insignificant deviations from Atypіzm is expressed
maternal tissue
Expansive growth
Infiltrative growth
Grow slowly
Grow quickly
Achieve largenesses
Rarely achieve largenesses
Formed sore rarely
Formed sore often
Does not give metastases
Give metastases
The relapse is not characteristic
The relapse is often
The common state of patient
violates a little
Have a considerable influence on
all organism
I thank you for attention!