Table 2.

Clinicopathological, Immunohistochemical, and Genetic Characteristics of 13 Endometrioid Carcinomas

Case	Age	Stage	Grade	Endometriosis	ETLMP	Squamous metaplasia	β-Catenin pattern	Expression membrane	Mutated codon	Base change	Amino acid change	Follow-up (years)
1	61	1c	1	Absent	Present	Present	Nuclear	Reduced	32	GAC to GGC	Asp to Gly	NED 6
2	49	1b	1	Absent	Present	Present	Nuclear	Preserved	32	GAC to TAC	Asp to Tyr	NED 6
3	47	1b	2	Absent	Absent	Present	Nuclear	Reduced	32	GAC to TAC	Asp to Tyr	NED 16
4	50	2b	2	Absent	Absent	Present	Nuclear	Reduced	33	TCT to TGT	Ser to Cys	NED 11
5	48	1a	1	Absent	Present	Present	Nuclear	Preserved	37	TCT to TGT	Ser to Cys	NED 8
6	64	2a	1	Present	Present	Present	Nuclear	Preserved	37	TCT to TTT	Ser to Phe	NED 11
7	50	2a	2	Present	Absent	Present	Nuclear	Preserved	41	ACC to GCC	Thr to Ala	NED 12
8	38	1c	2	Present	Present	Present	Nuclear	Reduced	NS			NED 22
9	58	1c	3	Absent	Absent	Absent	Nuclear	Reduced	NS			NED 14
10	66	2c	2	Present	Absent	Absent	Membranous	Reduced	NS			NED 6
11	49	1c	2	Absent	Absent	Absent	Membranous	Reduced	NS			DD 2
12	61	2c	2	Absent	Absent	Absent	Membranous	Reduced	NS			DD 2
13	27	1a	3	Absent	Absent	Absent	Membranous	Reduced	NS			DD 3

Endometriosis in case 10 affected the contralateral ovary, whereas the tumorous ovary was affected in cases 6, 7, and 8. This last case arose directly from a endometriotic cyst. ETLMP: Endometrioid tumor of low malignant potential. NS: normal sequence. NED: No evidence of disease. DD: Died of disease.