RESUMO
OBJECTIVE: To describe an additional case of paratesticular solitary fibrous tumor. METHODS/RESULTS: A 67-year-old man presented a paratesticular mass lasting for one year. Histological examination showed a well-circumscribed lesion comprised of spindle cells proliferation without atypia, arranged in a fascicular pattern, intimately intertwining with thick collagen fibers. Tumor cells were strongly positive for vimentine and CD-34. Diagnostic criteria, clinical features and treatment of this condition are discussed. CONCLUSION: Solitary fibrous tumors are spindle cell neoplasm originally described in the pleura, but may occur in many different sites. Intrascrotal solitary fibrous tumors are uncommon and few cases have been reported.
Assuntos
Neoplasias dos Genitais Masculinos/patologia , Escroto , Idoso , Humanos , MasculinoRESUMO
OBJECTIVE: We report a case of localized amyloidosis of the urinary bladder in an 80-year-old female whose main presenting symptom was massive hematuria. METHODS: Cystoscopic examination revealed a tumor on the trigone and bladder neck. A transurethral resection of the tumor was performed and the fragments were processed for histopathological study with hematoxylin-eosin and Congo red staining and ultrastructural study. RESULTS: The histopathological analyses disclosed large eosinophilic deposits in the submucosa with birefringence under polarized light in Congo red staining. Electron microscopy revealed a meshwork of filaments typical of amyloid. The patient had no symptoms or signs of systemic disease and remains symptom-free four years later. CONCLUSIONS: Primary localized amyloidosis of the urinary bladder is a rare condition that can be successfully treated surgically and has an excellent prognosis.
