Cases reported "Prostatic Neoplasms"

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1/50. Acid-fast-positive legionella pneumophila: a possible pitfall in the cytologic diagnosis of mycobacterial infection in pulmonary specimens.

    The acid-fast stain is commonly used in the rapid cytologic assessment of bronchoalveolar lavage (BAL) fluid to detect pulmonary mycobacterial infections, particularly in immunocompromised patients. The identification of acid-fast, rod-shaped organisms may be taken as presumptive evidence of such an infection, in the appropriate clinical setting. However, this determination is made less specific by the occasional acid-fast positivity of microorganisms other than mycobacteria. We report on the occurrence of a fatal pneumonia caused by acid-fast positive legionella pneumophila detected by BAL. This is a potential pitfall in the rapid diagnosis of pulmonary mycobacterial infections.
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ranking = 1
keywords = alveolar
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2/50. Embryonal rhabdomyosarcoma of prostate in an adult--a diagnostic dilemma.

    Embryonal rhabdomyosarcoma of the prostate is a rare. Highly malignant tumour. The median age of occurrence is five years, but sporadic cases have been reported in adults' To the best of our knowledge, till date, fewer than ten cases have been reported of which only two are above the age of sixty years. We report a case of embryonal rhabdomyosarcoma of prostate in a patient more than sixty years of age. If one is not aware of this entity, one can make a mistake in the diagnosis as well as treatment.
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ranking = 22286.868826502
keywords = rhabdomyosarcoma
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3/50. hypokalemia, metabolic alkalosis, and hypertension: Cushing's syndrome in a patient with metastatic prostate adenocarcinoma.

    Ectopic adrenocorticotropic hormone (ACTH) and/or corticotropin-releasing hormone (CRH) are associated with a growing list of tumors. We report a 69-year-old white man with a history of high-grade prostate carcinoma and widely metastatic adenocarcinoma who presented with metabolic alkalosis, hypokalemia, and hypertension secondary to ectopic ACTH and CRH secretion. Laboratory values were consistent with hypokalemia and metabolic alkalosis. Markedly elevated serum cortisol (135 microg/dL), ACTH (1,387 pg/dL), CRH (69 pg/dL), and urine free cortisol (16,276 microg/24 h) levels were found. Chest computed tomographic (CT) scan showed small noncalcified parenchymal densities; however, bronchoscopy and bronchoalveolar lavage washings were unremarkable for a neoplastic process. Abdominal CT scan and magnetic resonance imaging showed multiple small liver lesions and multiple thoracic and lumbar intensities consistent with diffuse metastatic disease. Histological analysis of a biopsy specimen from the thoracic spine showed an undifferentiated adenocarcinoma consistent with a prostate primary tumor. The severe metabolic alkalosis secondary to glucocorticoid-induced excessive mineralocorticoid activity was treated with potassium supplements, spironolactone, and ketoconazole. In this case report, we describe an unusual tumor associated with ectopic ACTH and CRH production and the pharmacodynamic relationship of plasma cortisol levels and urinary cortisol excretion with ketoconazole treatment.
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ranking = 1
keywords = alveolar
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4/50. Pseudosarcomatous myofibroblastic tumor and myosarcoma of the urogenital tract.

    OBJECTIVE: Pseudosarcomatous myofibroblastic tumors (PMTs) of the urogenital tract are rare but distinctive lesions. Despite their benign behavior, they are frequently misinterpreted as leiomyosarcomas and rhabdomyosarcomas in preoperative biopsies and even in resected specimens because of their atypical spindle-cell features. Precise diagnosis of PMTs is important to avoid unnecessary radical therapy. We analyzed urogenital myoid tumors to clarify which of their characteristics are useful for the differential diagnosis. methods: We evaluated 7 urogenital myoid tumors consisting of 3 PMTs, 2 leiomyosarcomas, and 2 rhabdomyosarcomas. We studied the expression of various immunohistochemical muscle-cell markers including desmin, muscle-specific actin, alpha-smooth muscle actin, high-molecular-weight caldesmon, and myogenin. RESULTS: desmin, muscle-specific actin, and alpha-smooth muscle actin were noted variably in all tumor types, whereas high-molecular-weight caldesmon was expressed only in leiomyosarcomas, and myogenin was expressed only in rhabdomyosarcomas. CONCLUSION: High-molecular-weight caldesmon and myogenin are useful for differentiating urogenital PMTs from myosarcomas.
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ranking = 11143.434413251
keywords = rhabdomyosarcoma
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5/50. New techniques in hadrontherapy: intensity modulated proton beams.

    Inverse planning and intensity modulated (IM) X-ray beam treatment techniques can achieve significant improvements in dose distributions comparable to those obtained with forward planned proton beams. However, intensity modulation can also be applied to proton beams and further optimization in dose distribution can reasonably be expected. A comparative planning exercise between IM x-rays and IM proton beams was carried out on two different tumor cases: a pediatric rhabdomyosarcoma and a prostate cancer. Both IM x-rays and IM protons achieved equally homogenous coverage of the target volume in the two tumor sites. Predicted NTCPs were equally low for both treatment techniques. Nevertheless, a reduced low-to-medium dose to the organs at risk and a lesser integral non-target mean dose for IM protons in the two cases favored the use of IM proton beams.
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ranking = 3714.4781377503
keywords = rhabdomyosarcoma
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6/50. Post-chemotherapy microscopic residual prostate rhabdomyosarcoma: long-term conservative follow-up.

    In spite of advances in the treatment of childhood bladder and prostate rhabdomyosarcoma (RMS), the ability to detect minimal residual disease correlates imperfectly with the ultimate outcome. We report the long-term follow-up of a child with microscopic residual RMS after chemotherapy. The correct interpretation of the histologic findings spared the child unnecessary additional therapy and raises enigmatic questions about the biology of minimal residual disease.
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ranking = 18572.390688752
keywords = rhabdomyosarcoma
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7/50. Botryoid rhabdomyosarcoma of prostate--a case report.

    Botryoid rhabdomyosarcoma of the prostate is a rare tumour in children, mostly below 6 years of age. A case of 5 year old male child presenting with acute retention of urine due to botryoid rhabdomyosarcoma of the prostate is described.
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ranking = 22286.868826502
keywords = rhabdomyosarcoma
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8/50. Primary primitive peripheral neuroectodermal tumor of the prostate. Immunophenotypic and molecular study of a case.

    A case of primitive peripheral neuroectodermal tumor arising in the prostate gland of a 31-year-old man and first diagnosed through a biopsy is reported. Microscopically, the tumor was made up of solid nests and sheets of small round cells, and it was difficult to distinguish the neoplasm from other small round cell tumors, such as small cell carcinoma, rhabdomyosarcoma, or malignant lymphoma. Immunohistochemically, the tumor cells showed immunoreactivity for CD99, vimentin, neuron-specific enolase, and synaptophysin. The neoplasm was excised by a radical surgical procedure preceded by chemotherapy and radiation therapy. The morphologic diagnosis of the prostatectomy specimen was complemented by molecular analysis performed on viable microdissected tissue obtained from formalin-fixed, paraffin-embedded tumor sections. polymerase chain reaction and sequencing assessment showed the presence of EWS/FLI1 type 2 chimeric transcript, confirming the diagnosis of peripheral primitive neuroectodermal tumor. To our knowledge, this is the first description of a primary peripheral primitive neuroectodermal tumor in the prostate gland.
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ranking = 3714.4781377503
keywords = rhabdomyosarcoma
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9/50. Successful resection of prostatic rhabdomyosarcoma by the posterior sagittal approach combined with preoperative chemotherapy.

    The authors used a posterior sagittal approach to successfully remove a huge prostatic rhabdomyosarcoma from a 3-year-old boy after he had received intensive chemotherapy. This procedure enables safe removal of the prostatic rhabdomyosarcoma under direct vision and with minimal damage to other pelvic organs.
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ranking = 22286.868826502
keywords = rhabdomyosarcoma
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10/50. Primary embryonal rhabdomyosarcoma of prostate in adults: diagnosis and management.

    Embryonal rhabdomyosarcoma of the prostate is a common tumour in infants and children. It is rarely seen in adults. The combined modality has improved outcome in children, where as in adults prognosis is poor. The lack of awareness of this entity in adults, delay in diagnosis and a more aggressive behavior of this malignancy are some of the reasons. We report two cases of embroyonal rhabdomyosarcoma of prostate in adults along with review of literature with an aim to define natural history and formulate treatment policy.
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ranking = 22286.868826502
keywords = rhabdomyosarcoma
(Clic here for more details about this article)
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