Rare Tumors
Mostrando 1-12 de 261 artigos, teses e dissertações.
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1. Prognostic Factors and Management of Colorectal Gastrointestinal Stromal Tumors
Abstract Introduction The gastrointestinal stromal tumor (GIST) is the most common mesenchymal neoplasm of the gastrointestinal tract. Even though it can be found in any location of the digestive tract, the colorectal GIST is rare. With this study, we aim to review the current knowledge regarding the prognosis and management of colorectal GIST. Methods A
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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2. Extraparotid Warthin Tumors Imitating Metastasis of Oral Cancers
Abstract Introduction Extraparotid Warthin tumor (WT) is a very rare entity, especially when synchronous with oral cancer (OC). Objective The present study presents a case series of extraparotid WTs detected in the surgical specimen of patients treated for OC. Methods From 2007 to 2016, 336 patients were operated for OC in our institution. Neck dissection
International Archives of Otorhinolaryngology. Publicado em: 2022
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3. Sinonasal Mucosal Melanoma: A Population-based Comparison of the EUROCARE and SEER Registries
Abstract Introduction Sinonasal melanomas are rare tumors with no comparative survival studies between Europe and the US. Objective To provide a population-based survival analysis between the two continents. Methods The European Cancer Registry (EUROCARE) and the United States Surveillance, Epidemiology, and End Results (SEER) databases were queried to id
International Archives of Otorhinolaryngology. Publicado em: 2022
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4. McKittrick-Wheelock Syndrome Secondary to Rectal Adenocarcinoma
ABSTRACT Introduction McKittrick-Wheelock syndrome is a rare condition that arises from a hypersecretory state secondary to large colorectal tumors, mainly villous adenomas, leading to an electrolytic disorder associated with chronic diarrhea that usually persists for years. It is a relatively unknown disease that can lead to severe complications such as ac
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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5. New treatments for rare bone diseases: hypophosphatemic rickets/osteomalacia
Abstract Phosphorus is one of the most abundant minerals in the human body; it is required to maintain bone integrity and mineralization, in addition to other biological processes. Phosphorus is regulated by parathyroid hormone, 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], and fibroblast growth factor 23 (FGF-23) in a complex set of processes that occur in the gu
Archives of Endocrinology and Metabolism. Publicado em: 2022
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6. Recurrence of melanoma in the scar after excised Spitz nevus in a 17-year-old child
Abstract Melanoma in childhood is rare and its diagnosis is more difficult than in adults, as it often presents histologic features overlapping with the Spitz nevus. The authors report the case of a 17-year old boy who was first diagnosed with Spitz nevus, however, the final diagnosis made after the excision of the tumor arising in the scar was changed to me
An. Bras. Dermatol.. Publicado em: 2021-08
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7. Blastoid mantle cell lymphoma: cutaneous infiltration
Abstract Mantle cell lymphoma is an aggressive B-cell, non-Hodgkin’s lymphoma, with lymph node or extranodal origin, and a mean survival of three to five years. Skin involvement is rare, secondary and indicates neoplasia dissemination. The authors report a case of a female patient, 69 years old, diagnosed previously, after lymph node and bone marrow biopsy
An. Bras. Dermatol.. Publicado em: 2021-08
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8. Semen quality from patients affected by seminomatous and non-seminomatous testicular tumor
ABSTRACT Testicular cancer is considered a rare disease affecting approximately 1% to 2% of the male population. This neoplasm has a cure rate of over 95%; as a result, a major concern is the future of fertility of carriers from this disease. There are several histological subtypes of testicular tumors; however, the Testicular Germ Cell Tumors (TGCTs), compr
Int. braz j urol.. Publicado em: 2021-06
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9. A novel mutation in PRKAR1A gene in a patient with Carney complex presenting with pituitary macroadenoma, acromegaly, Cushing's syndrome and recurrent atrial myxoma
SUMMARY Carney complex (CNC) is a rare syndrome of multiple endocrine and non-endocrine tumors. In this paper we present a 23-year-old Iranian woman with CNC who harbored a novel mutation (c.642dupT) in PRKAR1A gene. This patient presented with pituitary macroadenoma, acromegaly, recurrent atrial myxoma, Cushing's syndrome secondary to primary pigmented nodu
Arch. Endocrinol. Metab.. Publicado em: 2021-06
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10. Case for diagnosis. Infraorbital schwannoma
Abstract We report a 40-year-old man, with an unremarkable personal and family history, who presented for evaluation of an asymptomatic papule located on his right cheek. Histopathology revealed an encapsulated neoplasm within the dermis; composed by narrow, elongated, and wavy cells with an ill-defined cytoplasm, dense chromatin and tapered ends intersperse
An. Bras. Dermatol.. Publicado em: 2021-06
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11. Case-fatality and hospitalization rates for dermatological diseases in Brazil in the context of the COVID-19 pandemic
Abstract We report a 40-year-old man, with an unremarkable personal and family history, who presented for evaluation of an asymptomatic papule located on his right cheek. Histopathology revealed an encapsulated neoplasm within the dermis; composed by narrow, elongated, and wavy cells with an ill-defined cytoplasm, dense chromatin and tapered ends intersperse
An. Bras. Dermatol.. Publicado em: 2021-06
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12. Trauma-induced acquired reactive perforating collagenosis
Abstract Mohs micrographic surgery is a specialized form of skin cancer surgery that has the highest cure rates for several cutaneous malignancies. Certain skin cancers can have small extensions or “roots” that may be missed if an excised tumor is serially cross-sectioned in a “bread-loaf” fashion, commonly performed on excision specimens. The method
An. Bras. Dermatol.. Publicado em: 2021-06