Soft tissue tumors

By the soft tissues are derived mesenchymal, striated muscle and nervous tissue.

The classification of soft tissue tumors, as epithelial, The principle of histogenesis (t. it is. tumor It bears the name of the fabric, from which it develops).

Benign tumors of the soft tissues They represent a fairly large group of various neoplasms, whose main feature is their morphological identification with the tissues, from which they evolved. They are characterized by uniformity of the cellular elements with respect to each individual tumor without substantially increasing nuclei, often the lack of nucleoli in them, Sometimes the presence of cells in mitosis.

Malignant tumors, as epithelial, They may have varying degrees of malignancy until the complete loss of morphological characters of the original fabric. Often, the differentiation of these tumors is not only cytological, and histologically presents certain difficulties.

According to the International histological classification of WHO, the following types of tumors and tumor-like formations of soft tissues (in an abbreviated form).

Tumors of fibrous tissue

Benign

Fiʙroma

Malignant

Fiʙrosarkoma

Tumors adipose tissue

Benign

Lipoma

Malignant

Liposarcoma

Tumors muscle

Benign

Leyomyoma

Raʙdomioma

Malignant

Leiomyosarcoma

Raʙdomiosarkoma

Tumor blood vessels

Benign

Gemangioma

Malignant

Gemangioэndotelioma (angiosarkoma)

Gemangiopericitoma

Tumors of lymphatic vessels

Benign

Limfangioma

Malignant

Limfangioэndotelioma (limfangiosarkoma)

Tumors synovial tissue

Benign

Sinovioma

Malignant

Synovial sarcoma

Tumors of mesothelial tissue

Benign

Mesothelioma

Malignant

Mesothelioma

Tumors of peripheral nerves

Benign

Nevrilemmoma (neurinoma, schwannomas)

Malignant

Neurogenic sarcoma (neyrofibrosarkoma, malignant schwannoma)

Tumors possible ekstragonadnogo embryonic origin

Benign

Teratoma (dermoid cyst)

Malignant

Teratocarcinomas

Émbrionalʹnaâ cancer

Xorionkarцinoma

The role of morphological studies in general comprehensive examination of patients with very large tumors. As an independent research method fologicheskogo widespread cytological diagnosis of tumors. The advantages of this method are the necessity of a small amount of material for research, Technical availability, the possibility of emergency and re-run.

Cytological methods reveals malignancy begins even in the absence of not only the germination, but the tumor itself, t. it is. at this stage,, when cytological assessment is the only method of morphological diagnosis of tumor. However, trace in cytological preparations all histomorphological features of cancer and other tumor types is still not possible.

During the cytological examination is necessary to have an accurate idea of ​​cytomorphology organ or tissue in health and disease.