Growing teratoma syndrome (GTS) is an increase in tumor size containing only mature teratoma component, during or after chemotherapy for germ cell tumors. A surgical resection is important to confirm diagnosis and is considered as the most appropriate therapeutic management. GTS is rare event in association with ovarian germ cell tumors. In this report, we present a case of GTS which occurred f...

calcifying epithelial odontogenic tumor (ceot) is an uncommon odontogenic tumor with well-known histopathological features and a challenging treatment plan. although some investigators advocate conservative approach as the treatment of choice, others believe in radical surgical excision to avoid recurrence or malignant transformation. the main objective of this case report is presenting an unus...

calcifying epithelial odontogenic tumor is a rare odontogenic neoplasm. its occurrence in the maxillary sinus is very rare. maxillary tumors tend to be locally aggressive and may rapidly involve the surrounding vital structures.  we report a case of calcifying epithelial odontogenic tumor involving maxillary sinus in a 48 years old female patient with the oral mucosal involvement. the purpose o...

introduction: ameloblastic fibro-odontoma is a rare, benign, asymptomatic tumor. the term ameloblastic fibro-odontoma was first used by hooker in 1967 as a separate lesion from ameloblastic odontoma.   case report: this case report describes an eleven years old female with large ameloblastic fibro-odontoma in the right maxillary sinus.   conclusion: there is a low potential for recurrence after...

This study investigated the clinicopathological characteristics and factors influencing recurrence of pelvic endodermal sinus tumor (PEST). 54 cases were retrospectively analyzed from at Zhejiang Cancer Hospital. Progression-free survival (PFS) related on disease evaluated. Six patients had extragonadal tumor, four histological features (EST) combined with embryonal carcinoma (EC). 39 underwent...

littoral cell angioma is a splenic vascular tumor of splenic sinus lining cells that is considered benign in general. this report describes a case of littoral cell angioma with no malignant histological features. the lesion is composed of anastomosing vascular channels resembling splenic sinus; they are lined by endothelial cells which show mitotic activity very rare. immunohistochemically, the...

Ovarian germ cell tumors (OGCTs) show a heterogeneity that is not seen in their testicular counterparts and include benign mature cystic teratomas, intermediate immature teratomas, malignant germ cell tumors [GCTs (dysgerminomas, endodermal sinus tumors, and mixed GCTs)], and GCTs arising in dysgenetic gonads of 46,XY individuals. Comparative genomic hybridization was used to analyze 27 OGCTs f...

Endodermal Sinus Tumor (EST) is the rarest of the vaginal tumors. It commonly occurs in children of under 3 years and usually presents with vaginal bleeding EST is most frequently encountered in the ovary. It is exceedingly rare in the vulva. Approximately 50 cases of EST of the vagina or uterine cervix have been reported. The presence of Schiller Duval bodies and various histologic patterns ch...