RESUMO
Reportamos el caso de un espiroadenoma ecrino en una paciente de 90 años de edad, que empezó un año antes de la consulta con una lesión en el párpado. Se trata de un tumor benigno de la glándulas sudoríparas que es raro en el párpado. Al principio pensamos en otro tumor, como el carcinoma sebáceo, por su rápido crecimiento. La posibilidad de un tumor de glándulas sudoríparas debiera considerarse en el diagnóstico de tumores palpebrales.
We report a case of an eccrine spiradenoma in a 90 years old woman, who began a year before with the lesion on the eyelid. It is a begin sweat gland tumor, that is rare on the eyelid. At the beginning we thougth in an other tumor, like sebaceous carcinoma for its quick growth. The possibility of sweat gland tumor should be kept in mind in the diagnosis of eyelid tumours.
Assuntos
Humanos , Feminino , Idoso de 80 Anos ou mais , Acrospiroma/cirurgia , Neoplasias Palpebrais/diagnóstico , Acrospiroma/patologia , Acrospiroma/ultraestruturaRESUMO
Acrospiromas are cutaneous tumors of sweat duct differentiation. They usually present as slowly enlarging 1 to 2 cm nodules in middle-aged or older adults without site predilection. On histologic examination they are multilobular dermal masses composed of a biphasic cell population. Acrospiromas are benign, and treatment consists of surgical excision.
Assuntos
Acrospiroma/patologia , Neoplasias das Glândulas Sudoríparas/patologia , Acrospiroma/ultraestrutura , Idoso , Idoso de 80 Anos ou mais , Humanos , Masculino , Neoplasias das Glândulas Sudoríparas/ultraestruturaRESUMO
A 73-year-old woman with a malignant hidroacanthoma simplex on her right lower limb is reported. The lesion was immunohistochemically studied. Carcino-embryonic antigen and epithelial membrane antigen were found in the luminal border of ductal structures within the aggregations of neoplastic cells. We review the literature on this subject.
Assuntos
Acrospiroma/patologia , Neoplasias das Glândulas Sudoríparas/patologia , Acrospiroma/imunologia , Acrospiroma/ultraestrutura , Idoso , Feminino , Humanos , Imuno-Histoquímica , Perna (Membro) , Neoplasias das Glândulas Sudoríparas/imunologia , Neoplasias das Glândulas Sudoríparas/ultraestruturaRESUMO
A single poroid neoplasm composed of three histologically distinct lesions (hidroacanthomas simplex, eccrine poroma, and dermal duct tumor) is reported. Comparative histologic, histochemical, and electron-microscopic studies revealed that each tumor subtype contained varying proportions of poroid cells, clear cells, and cuticular cells. The major component of all three neoplasms was poroid cells, which, under the electron microscope, were characterized by a few, small, poorly developed desmosomes, and were histochemically characterized by a positive succinic dehydrogenase reaction. The dermal duct tumor was cultured, and showed similar histochemical findings to the in vivo poroid cells. These results suggest that poroid cells play the most important role in the histogenesis of these three neoplasms.
