XXXX : correlation of histopathology with radiation response.

@entity5 @entity957 @entity189 @entity1726 @entity11408
Forty-nine cases of @entity11408 were evaluated histopathologically and the radiation responses of the @entity5 types were assessed. The overall radiation response were as follows: CR 40.8%, PR 14.3%, NC 42.9%, @entity1726 2.0%. The distribution of @entity5 types were: @entity957 (WHO type I) 4.08%; @entity189 (WHO type II) 4.08%; @entity189 (WHO type III) 91.84% var. Lympho-epitheliomatous (LE), Anaplastic (A), Spindle cell (SC), Clear cell (CC). 94.38% of the cases were classified as clinical stage II, III and IV ( @entity5 found beyond the nasopharyngeal space). The radiation response rate of the @entity5 in the lymphnode was reversed to the clinical stage and extent of node involvement, namely the higher stage and node involvement, the less rate of radiation response. Twelve cases received radiation dose of less than 4000 cGy, which comprised 11 NC cases and 1 @entity1726 case. Of the 37 cases who got 4000 cGy and over, the response rate was 72.97%. Of these WHO type I was not evaluated because of insufficient radiation dose; WHO type II showed 50% response rate; WHO type III showed 74.29% response rate. Radiation response (as assessed from the cervical lymphnode involvement) of @entity11408 was influenced by @entity5 burden and histologic type of the @entity5 , namely the less differentiated @entity5 responded better than the more differentiated one. No definite conclusion can be drawn yet of the different behaviour (if any) of the variants of undifferentiated @entity189 (WHO type III) toward irradiation.
