Synchronous collision malignant melanoma and adenocarcinoma of the rectum.
Tech Coloproctol
; 14(2): 181-4, 2010 Jun.
Article
em En
| MEDLINE
| ID: mdl-20309715
ABSTRACT
"Collision tumors" consist of two independent but coexisting tumors. This uncommon situation might be easily mistaken for a composite tumor where one histogenetic event originates from two apparently distinct neoplasms. Colorectal collisions are particularly unusual; here, we report the exceedingly rare case of a 61-year-old man with malignant melanoma and adenocarcinoma colliding in the rectum. Collision tumors have an idiopathic pathophysiology and in fact "accidental meeting" is accepted by many authors. This article discusses the concepts about cancer development, which are overlooked by this hypothesis, another theory to explain that this rare occurrence involves microenvironment changes.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Retais
/
Adenocarcinoma
/
Melanoma
/
Neoplasias Primárias Múltiplas
Tipo de estudo:
Etiology_studies
Limite:
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article