We report a rare case of an elderly woman presented with right renal mass with invasion of renal vein and several small lymphadenopathy in the hilar area. The diagnosis of kidney cancer is suspected and the patient underwent open radical nephrectomy, surrenalectomy and lymphadenectomy dissection. The pathologic examinations find a rosai dorfman disease. This unusual benign entity is uncommon in...

Skin infiltration of circulating memory T cells with cutaneous tropism is considered one of the pathologic mechanisms in atopic dermatitis (AD). Skin-seeking circulating T lymphocytes can be identified by their expression of the cutaneous lymphocyte-associated antigen on the cell surface. Recent studies have contributed useful new information about the function and recirculation properties of t...

ineum are uncommon, a knowledge of its anatomy and expected pathologic entities is useful which interpreting CT and MR images. The purpose of this article is to demonstrate the CT and MR imaging anatomy of the perineum and to review the imaging findings of a spectrum of pathologic processes that affect this anatomic region. These processes include primary tumors, such as aggressive angiomyxoma,...

The pathologic diagnosis of lung cancer historically has relied primarily on morphologic features of tumors in histologic sections. With the emergence of new targeted therapies, the pathologist is called upon increasingly to provide not only accurate typing of lung cancers, but also to provide prognostic and predictive information, based on a growing number of ancillary tests, that may have sig...

Malignant and advanced gastrointestinal stromal tumors (GIST) are currently treated with imatinib mesylate, an inhibitor of KIT and PDGFRA receptor tyrosine kinase. Pathologic evaluation of residual disease is the gold standard in these cases, as clinical and radiologic assessments of treatment response do not always correlate with the pathologic response. Phenotypic and genotypic changes may a...

Neuroendocrine tumors (NETs) arise in most organs of the body and share many common pathologic features. However, a variety of different organ-specific systems have been developed for nomenclature, grading, and staging of NETs, causing much confusion. This review examines issues in the pathologic assessment of NETs that are common among primaries of different sites. The various systems of nomen...

Dementia is often characterized as being caused by one of several major diseases, such as Alzheimer's disease (AD), cerebrovascular disease, Lewy body disease, or a frontotemporal degeneration. Failure to acknowledge that more than one entity may be present precludes attempts to understand interactive relationships. The clinicopathological studies of dementia demonstrate that multiple pathologi...

Background. Recurrent glottic squamous cell carcinomas following radiation therapy for early staged tumors are oftentime early staged tumors. Management of these early stage recurrences presents a dilemma for the head and neck surgeon. Difficulties in appropriate tumor mapping, preoperative analysis, and poor understanding of the virulent pathologic nature of the recurrence may impede surgical ...

Pathological rupture of the spleen (PRS) is a rare, but well known complication of some hematological malignancies. In a recent review of the literature, Giagounidis et al. Identified 136 cases of pathologic rupture of the spleen since 1861. This number gives an idea of how seldom it occurs. In this review, 34% of the cases had occurred in acute leukemias, and 13% in acute lymphoblastic leukemi...

Objective: To report a case of melanoma metastatic to the thyroid gland and to review our experience with secondary neoplasms of the thyroid. Methods: We depict the presentation and treatment of the patient, illustrating pathologic and radiologic findings. All patients with pathologic confirmation of metastatic tumors of the thyroid undergoing thyroidectomy at the Massachusetts General Hospital...