Said Khayyata

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UNLABELLED The expression of different MUC glycoproteins has helped define cellular lineage in variety of pancreatic neoplasms, and has helped identify distinct carcinogenic pathways such as the intestinal pathway characterized by diffuse/strong MUC2/CDX2 expression in intestinal-type intraductal papillary mucinous neoplasms (IPMNs) and their associated(More)
BACKGROUND Extramedullary plasmacytoma of the retroperitoneum is rare. Furthermore, plasmacytoma with anaplastic features can be confused with high grade sarcoma clinically and histologically, particularly when the initial immunohistochemical tumor markers are negative. However, paying attention to cytologic imprint smears can give valuable clues to the(More)
A 79-year-old man with a medical history of metastatic colon cancer to the liver and lung presented to the emergency department with shortness of breath. Computed tomographic (CT) angiography of the chest demonstrated an endovascular mass extending from the intrahepatic inferior vena cava into the right atrium (Fig 1, arrow). Suction thrombectomy was(More)
BACKGROUND Hematopoietic stem cell transplantation (HSCT) is a curative treatment option for hematological malignancies, but this treatment can be associated with a mortality risk. MATERIAL/METHODS A ten-year retrospective review of all autopsies was performed where those who underwent HSCT were studied. The major autopsy findings and the cause of death(More)
OBJECTIVE To identify the pitfalls of overdiagnosing papillary formation as papillary thyroid carcinoma (PTC) in thyroid cytology specimens. METHODS Patients with papillary hyperplastic nodules who had preoperative fine-needle aspiration biopsy (FNAB) were selected for this study. All patients had been diagnosed as having either PTC or lesions suggestive(More)
BACKGROUND Metanephric adenoma (MA) is a rare benign renal neoplasm that can occur at any age, whereas, Wilms' tumor (WT) is the most common malignant renal neoplasm in children and is occasionally seen in adults. CASES In case 1, a 26-year-old male had a left renal mass. Fine needle aspiration (FNA) showed 3-dimensional sheets of cells with nuclear(More)
Invasive micropapillary carcinoma, originally described as a distinctive type of invasive carcinoma in the breast, is being increasingly recognized as a separate entity in many other organs; however, it has not yet been documented in the pancreas or periampullary region. In this study, 313 pancreatic and 73 periampullary carcinomas were reviewed to(More)
The current FDA-approved standard of care for nonsmall cell lung cancer is Carboplastin/Taxol/Avastin based upon an impressive survival benefit; however, patients with squamous carcinoma (SQCC) cannot receive Avastin because of a 30% mortality rate due to fatal hemoptysis. In this study we evaluated the role of cytomorphology and immunohistochemistry in(More)
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