RESUMO
Los tumores de colisión consisten en neoplasias compuestas por dos poblaciones celulares distintas que mantienen una clara diferenciación de sus bordes y que se encuentran adyacentes una de otra en la misma muestra histopatológica. Esta asociación puede corresponder a dos tumores malignos, dos benignos o uno maligno y uno benigno. Son infrecuentes y, en ocasiones, representan un desafío clínico para la detección correcta de ambas neoplasias. Se presenan los casos de tres pacientes con tumores cutáneos de colisión, de estirpe melanocítica combinada con queratinocítica; en dos de ellos ambas neoplasias fueron malignas y en uno, se asociaron una lesión maligna y una benigna.
Collision tumors consist of neoplasms composed of two different cell populations that maintain a clear differentiation of their borders, and that are adjacent to each other in the same histopathological sample. This association can correspond to two malignant tumors, two benign, or one malignant and one benign. They are infrequent and, at times, represent a clinical challenge for the correct detection of both neoplasms. Three cases of cutaneous collision tumors of a melanocytic line combined with a keratinocytic line are presented, two of them in which both neoplasms were malignant and one that associated a malignant and a benign lesion.
Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Neoplasias Cutâneas/diagnóstico , Carcinoma Basocelular/diagnóstico , Melanoma/diagnóstico , Neoplasias Primárias Múltiplas/diagnóstico , Neoplasias Cutâneas/cirurgia , Neoplasias Cutâneas/patologia , Carcinoma Basocelular/cirurgia , Carcinoma Basocelular/patologia , Melanoma/cirurgia , Melanoma/patologia , Neoplasias Primárias Múltiplas/cirurgia , Neoplasias Primárias Múltiplas/patologiaRESUMO
@#<p>Majority of cervical cancer are squamous cell carcinoma and adenocarcinoma. The co-existence of two histologic types is rare. This article presents three cases of collision tumors of the cervix within a 10-year review. All underwent radical hysterectomy for an early stage disease. Likewise, it aims to review clinicopathologic features, management, response to treatment and prognosis of these types of tumor in the light of recent literature.</p>
Assuntos
Neoplasias do Colo do Útero , Histerectomia , Carcinoma de Células Escamosas , Adenocarcinoma , PrognósticoRESUMO
El tumor de colisión es una variante poco frecuente de tumores del cérvix uterino, originados de las células de reserva de la unión escamocelular y que debe ser diferenciado de los carcinomas adenoescamosos. El objetivo del presente artículo es determinar las características morfológicas de 17 casos de tumor de colisión de cérvix uterino. La edad promedio de presentación fue 48,7 años (rango: 34-87 años). Los 4 casos con metástasis ganglionares correspondieron al componente de adenocarcinoma.
Collision tumor is an uncommon variant of cervical tumors originating from the reserve cells of squamous cell union and must be differentiated from adenosquamous carcinomas. The aim of this paper is to determine the morphological characteristics of 17 cases of collision tumor of uterine cervix, in which it was found that the average age at diagnosis was 48.7 years (range: 34-87 years). In 5 cases lymph node metastases were of the adenocarcinoma component.