The Experts below are selected from a list of 15801 Experts worldwide ranked by ideXlab platform
Anthony A Mancuso - One of the best experts on this subject based on the ideXlab platform.
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rhabdomyoma of the pharyngeal musculature extending into the prestyloid parapharyngeal space
American Journal of Neuroradiology, 1996Co-Authors: Roxana C Helmberger, Scott P Stringer, Anthony A MancusoAbstract:A 66-year-old woman reported fullness in the right ear for 6 months before admission. A submucosal mass shown by MR imaging and CT to arise in the prestyloid parapharyngeal space was the cause of her symptoms. Histologically, the mass proved to be a rhabdomyoma, a rare Benign Neoplasm, that arose from the muscular wall of the pharynx.
Marta Kicia - One of the best experts on this subject based on the ideXlab platform.
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cryptosporidium baileyi pulmonary infection in immunocompetent woman with Benign Neoplasm
Emerging Infectious Diseases, 2020Co-Authors: żaneta Kopacz, Martin Kvac, Pawel Piesiak, Magdalena Szydlowicz, Andrzej B Hendrich, Bohumil Sak, John Mcevoy, Marta KiciaAbstract:Cryptosporidium baileyi, a bird-specific parasite, infects gastrointestinal, pulmonary, and urinary tracts of its host. We report on a C. baileyi infection associated with pulmonary hamartoma in an immunocompetent patient in Poland. Further work is needed to investigate the association between Cryptosporidium infections and tumors.
Roxana C Helmberger - One of the best experts on this subject based on the ideXlab platform.
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rhabdomyoma of the pharyngeal musculature extending into the prestyloid parapharyngeal space
American Journal of Neuroradiology, 1996Co-Authors: Roxana C Helmberger, Scott P Stringer, Anthony A MancusoAbstract:A 66-year-old woman reported fullness in the right ear for 6 months before admission. A submucosal mass shown by MR imaging and CT to arise in the prestyloid parapharyngeal space was the cause of her symptoms. Histologically, the mass proved to be a rhabdomyoma, a rare Benign Neoplasm, that arose from the muscular wall of the pharynx.
John K C Chan - One of the best experts on this subject based on the ideXlab platform.
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angiomyofibroblastoma of the vulva a Benign Neoplasm distinct from aggressive angiomyxoma
The American Journal of Surgical Pathology, 1992Co-Authors: William Y W Tsang, Cyril Fisher, Kingchung Lee, John K C ChanAbstract:Aggressive angiomyxoma of pelvic soft parts is a rare lesion with a high risk of recurrence. We report 10 cases of angiomyofibroblastoma, a hitherto uncharacterized Benign tumor of the vulva histologically mimicking aggressive angiomyxoma. All patients had a vulval mass, often clinically diagnosed as a Bartholin's cyst. There was no recurrence after excision. The tumors were well circumscribed, measuring 0.5-12 cm in maximum dimension. They were characterized by alternating hypercellular and hypocellular edematous zones in which abundant blood vessels (predominantly of the capillary type) were irregularly distributed. Spindled, plump spindled, and oval stromal cells were aggregated around the blood vessels, sometimes forming solid compact foci, or were loosely dispersed in the hypocellular areas. Their nuclei were bland, but rare ones were enlarged and hyperchromatic in four cases. Some cells had abundant eosinophilic hyaline cytoplasm and eccentrically placed nuclei. Mitotic figures were absent or very sparse. Scattered throughout were thin, wavy strands or thick bundles of collagen. Mast cells were readily seen in eight cases. Immunohistochemically, the stromal cells were reactive for vimentin and desmin, but not cytokeratin, muscle-specific actin, alpha-smooth muscle actin, or S-100 protein. Ultrastructural studies showed well-developed rough endoplasmic reticulum, Golgi apparatus, abundant intermediate filaments, and pinocytotic vesicles in the stromal cells. Angiomyofibroblastoma can be distinguished from aggressive angiomyxoma by its circumscribed borders, much higher cellularity, more numerous blood vessels (which lack prominent hyalinization), frequent presence of plump stromal cells, minimal stromal mucin, and rarity of erythrocyte extravasation.
Edward L. Lee - One of the best experts on this subject based on the ideXlab platform.
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Malignancies Arising in Oncocytic Schneiderian Papillomas
Archives of Pathology & Laboratory Medicine, 2001Co-Authors: Anirban Maitra, Leland B. Baskin, Edward L. LeeAbstract:Abstract Oncocytic schneiderian papillomas (OSPs) are uncommon Benign Neoplasms that arise from the sinonasal schneiderian epithelium. Malignancies arising in OSPs are rare, and, to our knowledge, only 14 such instances have been reported in the medical literature. We report 2 additional cases—a small cell carcinoma and a sinonasal undifferentiated carcinoma arising in OSPs and presenting synchronously with the Benign Neoplasm. The potential for malignant transformation in OSPs is small, but warrants that these papillomas be completely excised to exclude a coexisting carcinoma.
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Malignancies arising in oncocytic schneiderian papillomas: A report of 2 cases and review of the literature
Archives of pathology & laboratory medicine, 2001Co-Authors: Anirban Maitra, Leland B. Baskin, Edward L. LeeAbstract:c Oncocytic schneiderian papillomas (OSPs) are uncommon Benign Neoplasms that arise from the sinonasal schneiderian epithelium. Malignancies arising in OSPs are rare, and, to our knowledge, only 14 such instances have been reported in the medical literature. We report 2 additional cases—a small cell carcinoma and a sinonasal undifferentiated carcinoma arising in OSPs and presenting synchronously with the Benign Neoplasm. The potential for malignant transformation in OSPs is small, but warrants that these papillomas be completely excised to exclude a coexisting carcinoma. (Arch Pathol Lab Med. 2001;125:1365‐1367)