ABSTRACT
The potentialities of x-ray computer-aided tomography (CAT) in the studies of intraparietal blastomatous infiltration are analyzed as shown by examinations of 134 patients with gastric cancer. The diagnostic efficacies of various modifications of CAT (filling of the stomach with liquid, pneumoscanning of the stomach with or without tubes) are assessed. Good diagnostic potentialities of tubal scanning of the stomach in the assessment of intraparietal tumor infiltration are demonstrated. CAT semeiotics of gastric cancer is presented, characterizing the tumors with predominantly intraparietal dissemination of blastomatous infiltration. The existent projection limitations of axial CAT of individual portions of the stomach and high price of the examination imply that the indications to the use of this method in gastrooncology should be clearly defined. At the same time, scrupulous adherance to methodologic requirements aimed at imaging of intraparietal changes in gastric cancer may help to solve a number of differential diagnostic difficulties, primarily those connected with predominantly submucously growing carcinomas.
Subject(s)
Stomach Neoplasms/diagnostic imaging , Tomography, X-Ray Computed/methods , Aged , Contrast Media , Diagnosis, Differential , False Negative Reactions , False Positive Reactions , Female , Humans , Male , Middle Aged , Pneumoperitoneum, Artificial , Predictive Value of Tests , Sensitivity and SpecificityABSTRACT
Analysis of the data of 87 computer-aided tomographic examinations of patients with peritoneal and retroperitoneal lymphosarcomas permitted the authors single out a peculiar computer-tomographic "semeiotics" of this condition. Four states in computer-tomographic changes of the lymph nodes in this area were distinguished, each of them corresponding to specific clinical manifestations of the suffering. The authors came to such a conclusion as a result of detecting in the same 18 patients of a clear-cut correlation between the type of computer-tomographic semeiotics and lymphosarcoma phase in the process of therapy and after it, during remission. Not denying a high value of computer-aided tomography in the diagnosis of peritoneal and retroperitoneal lymphosarcomas, the authors confirm the well-known diagnostic potentialities of ultrasonic examination and consider that ultrasound should remain the primary diagnostic instrument in such conditions.
Subject(s)
Lymphoma, Non-Hodgkin/diagnostic imaging , Peritoneal Neoplasms/diagnostic imaging , Retroperitoneal Neoplasms/diagnostic imaging , Tomography, X-Ray Computed , Adult , Aged , Aged, 80 and over , Female , Humans , Lymphoma, Non-Hodgkin/pathology , Lymphoma, Non-Hodgkin/therapy , Male , Middle Aged , Neoplasm Staging , Peritoneal Neoplasms/pathology , Peritoneal Neoplasms/therapy , Remission Induction , Reproducibility of Results , Retroperitoneal Neoplasms/pathology , Retroperitoneal Neoplasms/therapyABSTRACT
Pancreatic insulinomas were intraoperatively revealed in 15 patients. X-ray computed tomography (CAT) revealed the tumor in only 6 (40 %) patients. The mean size of detectable insulinomas was 2.4 cm, that of undetectable ones 1.2 cm. X-ray CAT diagnosis is facilitated in case of a superficial localization of the tumor on the body or tail of the gland .
