نتایج جستجو برای: malignant lymph reticular diseases
تعداد نتایج: 1086939 فیلتر نتایج به سال:
Endometriosis is defined as the presence of endometrium-like tissues at extrauterine sites, most commonly in the abdominal cavity. Lymph node endometriosis is a rare but clinically important type of endometriosis that can mimic lymph node metastasis of a malignant tumor. (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) is a useful tool for diagnosin...
Recently there has been an increasing interest in immunological aspects of cancer. Evidence for the presence of some degree of host control over certain tumours has been accumulating (Black and Speer, 1959), and results of treatment of experimental animal and human tumours by immunological methods raise hopes of useful advances to come (Woodruff and Nolan, 1963). However, less work has been don...
Paraganglioma are tumors that arise within the sympathetic and parasympathetic nervous system. About 10% of paraganglioma spread to distant sites. Malignant potential has been difficult to be determined by histologic characteristic and it is defined after a metastatic lesion or direct invasion found in a site with no residual embryonic paraganglionic tissue. In this case report, a 5...
This report describes the case of a 16 year old girl with a history of high fever, prolonged fatigue, and cervical lymphadenopathy of the right side. In addition, the patient showed neutropenia, thrombopenia, and pronounced reticulopenia. Cervical ultrasound showed unilateral hypoechoic lymph nodes up to 23 mm in diameter suspicious for malignant lymphoma. Histology of a cervical lymph node spe...
Fibroblastic reticular cells (FRCs) are stromal cells found in secondary lymphoid organ. Despite its structural function in the lymph nodes being well established, recent studies indicate that the FRCs also play a key role in immunological processes, associated with cell transit, immune response, and cells activation quality, and contribute to peripheral tolerance. To this end, we focus this re...
A critical hallmark of adaptive immune responses is the rapid and extensive expansion of lymph nodes. During this process, the complex internal structure of the organs is maintained revealing the existence of mechanisms able to balance lymph node integrity with structural flexibility. This article reviews the extensive architectural remodeling that occurs within lymph nodes during adaptive immu...
Benign and malignant neoplasm of myoepithelial cells comprise a rare but well-characterized group of tumors in the salivary glands, breasts, and soft tissues. Histopathologically, myoepitheliomas show solid, reticular, trabecular architecture and myxoid or hyaline stroma, and are composed of round/epithelioid or spindle cells. The tumor cells of myoepitheliomas possess the capacity for epitheli...
AIM To evaluate the ability of endoscopic ultrasound (EUS) elastography to distinguish benign from malignant pancreatic masses and lymph nodes. METHODS A multicenter study was conducted and included 222 patients who underwent EUS examination with assessment of a pancreatic mass (n = 121) or lymph node (n = 101). The classification as benign or malignant, based on the real time elastography pa...
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