Viruses and otosclerosis: chance association or true causal link?
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Biomedical subjects
Publications and source records attributed to Alessandra Rinaldo.
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Primary tumors of the middle ear are much less commonly encountered in clinical practice than non-neoplastic lesions such as inflammatory polyps (aural polyps) or cholesteatomas. The rarity of such tumors can complicate attempts, by both clinicians and pathologists, to correctly classify them. It has been customary for many authors to segregate middle ear adenomas (MEAs) from middle ear carcinoids as two discrete benign neoplastic entities. It has become apparent, however, that MEAs and carcinoids of the middle ear share a sufficient number of overlapping pathologic features and similarities of clinical behavior to warrant their collapse into a single diagnostic category. It is proposed that these tumors should be designated as MEAs, which are defined as benign, indolent epithelial tumors of the middle ear that do not invade or erode bone and do not metastasize. The individual tumor cells are cytologically bland and polygonal, columnar or plasmacytoid-shaped; they may be arranged in islands, glandular formations or trabeculae, but not in papillary structures. They are typically keratin- and vimentin-positive immunohistochemically, and are often positive as well with antibodies for chromogranin A, synaptophysin, neuron-specific enolase, Leu-7, serotonin, pancreatic polypeptide and S-100 protein. Dense core neurosecretory granules may be identifiable by electron microscopy. Conservative surgical excision is the treatment of choice, and local recurrence following complete excision is quite uncommon.
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It is no secret that autopsy rates at most hospitals worldwide--both teaching and community hospitals--have declined precipitously in recent decades, but is this a desirable state of affairs? This article explores this issue from three viewpoints: that of the family members who grant permission for autopsies; that of the clinicians who seek permission for the autopsy to be carried out; and that of the pathologists who actually perform the post-mortem examination. Family concerns about (the sometimes tangential) matter of organ retention following autopsy have recently been highlighted in Europe, with an accompanying negative overall impression of the autopsy being conveyed by many outlets of the popular media. Clinicians will often concede that they feel somewhat distanced from the whole process of autopsy, and so do not hold it in such high esteem as their predecessors once did decades ago. Pathologists at present often perform autopsies as "additional duties" to be fitted in around their central functions, and so do not see them as a primary task to be accomplished. However, there are reasons why this may be detrimental to patient care, including in particular the fact that clinical/radiographic diagnoses are sometimes not confirmed by the results of a complete autopsy. Suggestions for improving the autopsy rate--in particular amongst head and neck cancer patients--are discussed, and include performance of a more rapid limited autopsy and the designation of specialist pathologists in head and neck cancer to carry out autopsies of these patients as an extension of their clinical duties. One conclusion seems inescapable: to increase autopsy rates, the status of the procedure will necessarily have to be upgraded from that of "afterthought/perfunctory task" to that of "consultation", with all of the shifts in attitude such a modification would entail.
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It has been established that the presence or absence of cervical node metastases in patients with head and neck squamous cell carcinoma (HNSCC) is a powerful prognostic indicator. This report reviews the evolution of thinking over the past 70 years with regard to the import and detection of cervical nodal metastases which exhibit spread of tumor beyond the confines of the original encompassing nodal capsule. In the process, this discussion touches upon clinical examination, gross and microscopic pathologic examination, and radiographic imaging studies. In particular, the distinction between gross nodal extracapsular spread of tumor and microscopic nodal extracapsular spread of tumor has been drawn in recent reports; this raises the possibility that identification of microscopic breaching of the nodc capsule by tumor might provide clinically significant information which is not provided by the gross observation of an intact lymph node capsule. While it remains to be seen whether microscopic extracapsular spread alone will prove to be an important prognostic factor, it is recommended that selective neck dissection continue to be offered even in those patients with clinically negative necks; further studies should aid in defining the import of microscopic extracapsular tumor spread in patients with positive cervical nodes.
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