UNLABELLED Receptors for somatostatin (SST) (SSTR) are expressed on various tumor cells as well as on activated lymphocytes. Previous data have shown that (99m)Tc-P829 binds with high affinity to many different types of tumor cells as well as to leukocytes via the human hSSTR2, hSSTR3, and hSSTR5 target receptors. Consequently, (99m)Tc-P829 was successfully introduced as a peptide tracer for tu...

Receptors for somatostatin (SST) (SSTR) are expressed on various tumor cells as well as on activated lymphocytes. Previous data have shown that 99mTc-P829 binds with high affinity to many different types of tumor cells as well as to leukocytes via the human hSSTR2, hSSTR3, and hSSTR5 target receptors. Consequently, 99mTc-P829 was successfully introduced as a peptide tracer for tumor imaging. In...

BACKGROUND The aim of this study was to investigate the distribution of different types of primary orbital tumors, histopathological diagnosis, and postoperative complications. MATERIAL AND METHODS We analyzed 122 patients (68 women and 54 men) with orbital tumors, hospitalized in the ENT Department of the Medical University of Silesia in Katowice during 1990-2013. The patients were character...

BACKGROUND Solitary fibrous tumor (SFT), which usually presents in the pleura and is thought to be mesothelial in nature, has been recently discovered in extrapleural sites, including the orbit. Presently ultrastructural studies show absence of epithelial-mesothelial features, and reactivity of the tumor cells to CD34 antigen on immunohistochemical analysis suggests the mesenchymal origin of su...

INTRODUCTION Endoscopic orbital surgery is a nascent field and new tools are required to assist with surgical planning and to ascertain the limits of the tumor resectability. OBJECTIVE We purpose to utilize three-dimensional radiographic reconstruction to define the theoretical lateral limit of endoscopic resectability of primary orbital tumors and to apply these boundary conditions to surgic...

A 53-year-old woman had an orbital mass composed of a neoplastic small round cell infiltrate and no apparent extraorbital primary tumor. Although the initial diagnosis was primary orbital lymphoma, a combination of mucin histochemistry and immunohistochemical staining for cytokeratin and estrogen receptors led to the discovery of an impalpable lobular carcinoma of the breast. We discuss how det...

We present the case of a 33-year-old man with acute onset of eye pain and diplopia as the presenting symptoms of rectal cancer with orbital metastasis. Colorectal cancer with orbital metastasis is exceedingly rare with only 7 cases worldwide despite the prevalence of colorectal cancer. The rarity of this presentation may be related to the long path through multiple vascular beds that tumor embo...

The term "orbital tumors" comprises a wide variety of lesions that often share the same cardinal clinical finding (exophthalmos) and clinical history. Age at presentation, associated ophthalmological findings, and radiological features, however, provide invaluable information as to the possible histological type of tumor. The present article serves as an introductory overview regarding the path...