A 15-year-old young man presented with a tumorous formation in the central site of his wrist bone. The node grew slowly within last 3 years. A histological research of a removed neoplasm revealed mature chondrocytes without mitoses, which randomly located in chondral lacunas. Cartilages of a capsule had different form and the sizes due to variable quantity of chondral cells, between which there were basic substance with liquid layers of a connective tissue. What is the most likely diagnosis?

In the young woman in the area of her distal extremity of a femur the tumor, which quickly grew, is removed. Grossly, it had a motley pattern – from white-sulfur to brown-red color and a quaggy consistency. Microscopical investigation revealed the basic tissue component of a tumor presented with osteal and the ossiform structures covered by atypical osteoblasts, with numerous thin-walled vessels and atypical mitoses figures. Make a diagnosis.

At autopsy, an 8-year-old child is found to have a poorly circumscribed tumor of the cerebellum. Histological investigation revealed crowds of small immature cells with hyperchromatic, round-oval nuclei and scant cytoplasm. Pathologists also found a few rosettes at slide examination. What is the most likely diagnosis in that case?

Examination of a young woman revealed a node-like, soft, and elastic homogeneous tumor of pinkish-white color along the acoustic nerve. The tumor contains cell bundles with oval nuclei. Cellular fibrous bundles form rhythmic structures made up by parallel rows of regularly oriented cells arranged in the form of a palisade with cell-free homogenous zones (Verocay bodies) between them. What tumor is it? A. *Neurinoma B. Ganglioneuroblastoma C. Malignant neurinoma" D. Neuroblastoma E. Ganglioneurinoma

What is a childhood tumor?

What is the name of this tumor?

What is the name of this tumor?

Teratoma is:

Which type of atypia connected with malignant tumors?

What does "sarcoma" mean ?

A gastroscopy revealed a tumorous formation 1,5 cm in diameter in a small curvature of his stomach. What character of tumor growth?

A macroscopical investigation of an operatively removed uterus revealed a tumor with a soft consistency, hemorrhages, and necroses. The tumor cut surface reminds ' the fish meat '. Histological research has found an expressed cellular and tissue atypia; there were cells with pathological mitoses figures. What is the most likely diagnosis?