Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 39

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The term “aggressive change” has been applied in radiology to describe pathological processes that are characterized by a violent and rapid development, connected with a very weak or even no reaction from the organism. Basic radiographic features that can decide whether the character of the process developing in bones is aggressive are: extraosseous extension/soft tissue mass, periosteal reaction, lesion margin, bone destruction, or rate of change. In this article the rules of interpretation concerning changes that have been noticed on the radiograph have been presented, without delving into the details of establishing the diagnosis of diseases. The degree of aggressiveness of individual radiographic features of abnormal bone tissue can occur differently. They should always be taken into consideration together. Yet those features which indicate a more aggressive character of the pathological process are deigned to be more important.
The work reports a rare case of canine two primary malignant tumours concurrent with one benign tumour occurring within a single organism. Soft palate malignant melanoma with metastases to the regional lymph nodes and internal organs was classified as the index tumour, while thyroid carcinoma was defined as incidentaloma. The third tumour recognised was a large lipoma located in the abdominal cavity. The presented case proves that in the animal organism affected with a malignant tumour, other tumours may develop.
This is a case study of the neoplasm which was detected in the kidney of a 6-year-old dog. Clinical examination, radiography and ultrasonography were used to define the extent and location of the mass. The removed tumor was 16 cm in diameter and weighed 2560 g. Histological and immunohistochemical diagnosis revealed a mixed character of the tumor, resembling fibrosarcoma and leiomyosarcoma.
The study presents two cases of dogs with congenital peritoneopericardial diaphragmatic hernia of radically different clinical courses. The dorsoventral and right lateral thoracic radiographs proved helpful in establishing a diagnosis. In the first dog examined, the disorder did not precipitate any clinical signs and it was recognized as an incidental finding solely during the radiological evaluation. The radiograms confirmed the presence of gas-filled bowel loops overlying the markedly enlarged cardiac silhouette. The radiographic finding of the other dog presented with a history of developing a circulatory-respiratory compromise revealed a severe cardiomegaly along with a blurred outline of the diaphragmatic dome. The definitive diagnosis was confirmed by the ultrasonographic examination, which allowed direct visualization of the liver displacement, i.e. some liver lobes were herniated into the pericardial sac.
The expression of p53 protein was determined by the immunohistochemical study with CM-1 polyclonal antibody. The investigations were performed on formalin-fixed and paraffin-embedded tissue samples of mammary tumours obtained from 131 bitches during surgery. The p53 protein accumulation was detected in 37 tumours (28.24%). No correlation was found between p53 protein overexpression and histological type, tumour size, or regional lymph node status. However, its relationship with a histologic malignant grade approached statistical significance (P=0.067). After the 24-month follow-up period, survival analysis revealed a shortened disease-free survival and overall survival time of the dogs with tumours, which overexpressed p53 protein. Only in the case of survival time, the difference was close to the borderline of statistical significance (P=0.061). The research data presented herein, being not fully explicit, have indicated a correlation of p53 protein accumulation with worse prognosis in canine mammary tumours, although the results do not allow recognising p53 protein accumulation as a suitable prognostic factor.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.