Pigmented Neuroectodermal Tumor of Infancy in the Epididymis

Diagnostic Cytologic Features of an Epididymal Melanotic Neuroectodermal Tumor of Infancy Present in Scrotal Fluid

“…To date, the cytologic features of MNTI have been reported in only 6 cases (Table I). [9][10][11][12]19,20 In all these published reports, only direct smears were performed and evaluated cytologically; 5 were obtained from preoperative material and 1 from an intraoperative touch smear of a resected tumor. To our knowledge, there has been no documentation of MNTI involving a body fluid, nor has there been a description of the cytologic features following ThinPrep™ and/or cell block preparation.…”

Primitive Neuroectodermal Tumor of the Kidney

“…16 Children and adolescents are most frequently affected, but the disease may present in young adults as well. These tumors usually occur in bone or soft tissue, particularly of the extremities, trunk, head and neck, 5 and only seldom affect the viscera, 15,16 including genitourinary sites 2,12,17,18 and pancreas. PNETs originating in the kidney are extremely rare and, because of their more aggressive behavior, appear to form a unique clinical entity.…”

Retinal Anlage Tumor of Epididymis: A Diagnostic Challenge on Cytology

“…Other sites known to be involved are the mandible, mediastinum, long bones, uterus, skull, brain, and epididymis [1, 2]. It occurs in infancy and has no sex predilection [2].…”

“…Other sites known to be involved are the mandible, mediastinum, long bones, uterus, skull, brain, and epididymis [1, 2]. It occurs in infancy and has no sex predilection [2]. It is also known as melanotic ameloblastoma, melanotic progonoma, pigmented neuroectodermal tumor of infancy, ameloblastic odontoma, congenital melanocarcinoma, congenital pigmented epulis, and retinoblastic teratoma [2].…”

“…Toda et al [2] first described the cytology of retinal anlage tumor of infancy while Pantanowitz et al [4] diagnosed pigmented neuroectodermal tumor from aspirated hydrocele fluid. The diagnosis of retinal anlage tumor on cytology is important for adequate management as the tumor is benign and requires only wide excision.…”