XXXX : A Retrospective Study of 14 Cases.

@entity1 @entity4153 @entity66 @entity4303 @entity3270
@entity3270 ( @entity3270 ) are rare and highly heterogeneous which present a wide spectrum of pathological and clinical manifestations. Fourteen @entity1 with histologically demonstrated LNEC were collected and analyzed retrospectively. The 14 cases were classified into 3 subtypes: typical @entity4303 in 5, and @entity4153 in 7. The mean survival time of the 14 @entity1 in this study was 112.5 months (95% CI, 81.5-143.6). Surgeries were performed for 2 @entity1 of @entity4303 , and they were alive with no evidence of recurrence after 24 and 47 months of follow-ups. @entity1 in the atypical @entity4303 group were treated with surgeries and postoperative radiotherapy. After 58.4 months of follow-ups (range: 9-144), 2 @entity1 showed no evidence of disease and 1 was lost to follow-up after 72 months. The other 2 @entity1 died of other @entity66 . In the @entity4153 group, a combination of chemotherapy and radiotherapy was applied. The mean survival time was 79.7 months (95% CI, 37.9-121.4), and the 5-year survival rate was 53.6%. In conclusion, the clinical behaviors, treatment protocols, and prognosis are different for each subtype of @entity3270 .
