RESUMO
AIM: The molecular pathogenesis of esophageal squamous cell carcinoma (ESCC) has been increasingly studied, but there is no report on the role of MSI in ESCC development associated with chagasic megaesophagus (CM).Results/methodology: In four ESCC/CM (4/19) we found microsatellite instability (MSI) alterations (21.1%), being three MSI-L (15.8%) and one MSI-H (5.3%). Four out of 35 ESCC cases showed MSI-L (11.4%) and only one out of 26 CM cases presented MSI-L (3.9%). The MSI-H was observed in an ESCC/CM patient that presents lack of MSH6 immunostaining corroborating deficiency in MMR pathway. Interestingly, the MSI-H ESCC/CM case also presented a deletion the HSP110 poly(T)17 gene. DISCUSSION/CONCLUSION: Taking together, we concluded that MSI is a rare event in esophageal squamous cell carcinoma, but can be associated with CM.
Assuntos
Doença de Chagas/complicações , Acalasia Esofágica/complicações , Neoplasias Esofágicas/complicações , Neoplasias Esofágicas/genética , Carcinoma de Células Escamosas do Esôfago/complicações , Carcinoma de Células Escamosas do Esôfago/genética , Instabilidade de Microssatélites , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
A supposed role for persistent high-risk human papillomavirus (HPV) infection in esophageal squamous cell carcinoma (ESCC) etiology has been suggested by a number of studies. Concomitantly, megaesophagus induced by the Trypanosoma cruzi cell-cycle activity also shows a potential association with ESCC. This review discusses esophageal cancer and the potential association between chagasic megaesophagus and HPV as risk factors for ESCC development.