RESUMO
Kaposi's sarcoma (KS) is a neoplastic vascular tumor. The case of a 91-year-old HIV-negative and HHV-8-positive with two reddish-purple lesions (one pedunculated) on the inner layer of the prepuce is described. Although primary penile KS is a relatively uncommon lesion in HIV-negative men, dermatologists and urologists should consider this possibility when treating non-specific penile lesions.
Assuntos
Soronegatividade para HIV , Neoplasias Penianas/patologia , Sarcoma de Kaposi/patologia , Idoso de 80 Anos ou mais , Herpesvirus Humano 8/isolamento & purificação , Humanos , Masculino , Neoplasias Penianas/virologia , Sarcoma de Kaposi/virologiaRESUMO
We report the clinical, morphological and immunohistochemical findings of a case with non-papillary serous cystadenoma of the epididymis. The tumor was a unilocular cyst with a thin fibrous capsule, lined by cuboidal or columnar epithelium containing ciliated cells, mostly arranged in a single layer. Immunohistochemically, the tumor cells were positive for cytokeratin (CK) AE1/AE3 and epithelial membrane antigen (EMA), strongly positive for CK7, progesterone receptor (PR), estrogen receptor (ER), androgen receptor (AR), vimentin, CA-125 and S-100 protein. The cells did not stain for CK20 and CD10. Morphological and immunohistochemical features suggested a mullerian differentiation, possibly originated from vestigial remnants of the Muller duct. This tumor is one of the rare benign lesions which should be considered in the differential diagnosis of a swelling in the epididymal region.
Assuntos
Cistadenoma Seroso/patologia , Epididimo/patologia , Neoplasias dos Genitais Masculinos/patologia , Idoso de 80 Anos ou mais , Cistadenoma Seroso/metabolismo , Epididimo/metabolismo , Neoplasias dos Genitais Masculinos/metabolismo , Humanos , Imuno-Histoquímica , Masculino , Ductos Paramesonéfricos/metabolismo , Ductos Paramesonéfricos/patologiaRESUMO
We report on an uncommon case of primary prostatic signet-ring cell carcinoma (SRCC) in a 78-year-old man. His prostatic specific antigen (PSA) level at presentation was 9.8 ng/ml. Histologically the tumor had a signet-ring morphology. Detailed immunohistochemical studies confirmed the prostatic origin of this neoplasm. All mucin stains were negative. This aggressive tumor is a distinct variant of primary prostatic carcinoma which should be distinguished from artefactual vacuolation of the tumor and metastatic disease.
RESUMO
A rare case of rectourethral fistula is described, with tunnelization of a flap from the anterior bladder wall in order to produce a new posterior urethra after excising the original one. The excellent result obtained by this technique introduced by Tanagho et al. is stressed.
Assuntos
Fístula Retal/cirurgia , Retalhos Cirúrgicos , Doenças Uretrais/cirurgia , Fístula Urinária/cirurgia , Idoso , Humanos , Masculino , Bexiga Urinária/cirurgiaRESUMO
Urethral diverticulum, either congenital or acquired, is very rare and becomes symptomatic when complicated by infection and lithiasis. This paper reports on such a case that was cured by radical excision of the lesion.
Assuntos
Cálculos/complicações , Divertículo/complicações , Doenças Uretrais/complicações , Idoso , Divertículo/congênito , Humanos , Masculino , Doenças Prostáticas/complicações , Doenças Uretrais/congênitoRESUMO
Polyps of the ureter are benign primary tumors of mesodermal origin. These are less common because the majority of benign tumors are epithelial in origin [2-10]. Two cases are described here. The differential diagnosis and the management of fibrous benign polyps of the ureter are discussed.
Assuntos
Pólipos/diagnóstico , Neoplasias Ureterais/diagnóstico , Adulto , Idoso , Humanos , Masculino , Pólipos/cirurgia , Neoplasias Ureterais/cirurgiaRESUMO
A new method for tracing the nervous control of the bladder is described. A protein substance, horseradish peroxidase, has been shown to be absorbed and transported by nerve fibers. The substance was injected into the bladder neck region of a series of dogs. After uptake by motor neurons the horseradish was carried to the spinal cord segment controlling micturition. Implications regarding the neurophysiology of the urinary tract are discussed.
Assuntos
Transporte Axonal , Gânglios Autônomos/citologia , Peroxidase do Rábano Silvestre , Neurônios Motores/citologia , Peroxidases , Medula Espinal/citologia , Bexiga Urinária/inervação , Animais , Cães , Plexo Hipogástrico/citologia , Masculino , Uretra/inervação , MicçãoRESUMO
A new method for tracing the nervous control of the bladder is described. A protein substance, horseradish peroxidase, has been shown to be absorbed and transported by nerve fibers. The substance was injected into the bladder neck region of a series of dogs. After uptake by motor neurons the horseradish was carried to the spinal cord segment controlling micturition. Implications regarding the neurophysiology of the urinary tract are discussed.
