Table 2.

Histological diagnosis by definition of negative tumor markers

	Criteria 1 (n = 19)		Criteria 2 (n = 33)		Criteria 3 (n = 37)
	Number of Cases	(%)	Number of Cases	(%)	Number of Cases	(%)
Pure germinoma	17	89.5	29	87.9	33	89.2
Germinoma with STGC	1	5.3	2	6.1	0	0
Germinoma and mature teratoma	1	5.3	1	3.0	0	0
IMT	0	0	0	0	1	2.7
Germinoma and IMT and EC	0	0	0	0	1	2.7
EC	0	0	0	0	1	2.7
Granulomatous inflammation	0	0	1	3.0	1	2.7

Abbreviations: STGC = syncytiotrophoblastic giant cells; IMT = immature teratoma; EC = embryonal carcinoma.