Natural Course of an Untreated Metastatic Perirectal Lymph Node After the Endoscopic Resection of a Rectal Neuroendocrine Tumor
Intestinal Research
;
: 175-179, 2015.
Artigo
em Inglês
| WPRIM
| ID: wpr-70044
ABSTRACT
Lymph node metastasis is rare in small (i.e., <10 mm) rectal neuroendocrine tumors (NETs). In addition to tumor size, pathological features such as the mitotic or Ki-67 proliferation index are associated with lymph node metastasis in rectal NETs. We recently treated a patient who underwent endoscopic treatment of a small, grade 1 rectal NET that recurred in the form of perirectal lymph node metastasis 7 years later. A 7-mm-sized perirectal lymph node was noted at the time of the initial endoscopic treatment. The same lymph node was found to be slightly enlarged on follow-up and finally confirmed as a metastatic NET. Therefore, the perirectal lymph node metastasis might have been present at the time of the initial diagnosis. However, the growth rate of the lymph node was extremely low, and it took 7 years to increase in size from 7 to 10 mm. NETs with low Ki-67 proliferation index and without mitotic activity may grow extremely slowly even if they are metastatic.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Reto
/
Seguimentos
/
Tumores Neuroendócrinos
/
Diagnóstico
/
Linfonodos
/
Metástase Neoplásica
Tipo de estudo:
Estudo diagnóstico
/
Estudo observacional
/
Estudo prognóstico
/
Fatores de risco
Limite:
Humanos
Idioma:
Inglês
Revista:
Intestinal Research
Ano de publicação:
2015
Tipo de documento:
Artigo
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