Endometrial stromal nodule (ESN) represents the benign end of the spectrum within the category of endometrial stromal tumors. Typically well-cicumscribed but not encapsulated tumors ranging in size from 0.5 to 22 (mean 7) cm. If centered in endometrium, they are freguently polypoid; they may be intramyometrial or subserozal. On low- power examination, these tumors are well demarcated from the adjacent myometrium. The differentiation of ESN from low-grade endometrial stromal sarcoma is not possible in a curretage specimen. 64 years old patient 's curetage material who has postmenoposal bleeding and pain semptoms was examined and diagnosed as endometrial stromal sarcoma (ESS). But at histerectomy specimen we saw any invazion of myometrium and change the diagnose as ESN.
Keywords: Endometrial Stromal Tumors, Myometrium
