Composite uterine neoplasm with embryonal rhabdomyosarcoma and primitive neuroectodermal tumor components

Rhabdomyosarcoma with divergent differentiation, variant of primitive neuroectodermal tumor, or unique entity?

Frances Cate, Julia A. Bridge, Marta A. Crispens, Vicki L. Keedy, Ashley Troutman, Cheryl M. Coffin, Oluwole Fadare

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Three cases of composite uterine neoplasms comprised of primitive neuroectodermal tumor (PNET) and rhabdomyosarcoma (RMS) have previously been described, including only one wherein the rhabdomyosarcomatous component was of the embryonal subtype. Whether such composite neoplasms are a variant of RMS, a variant of PNET, or a unique entity is unknown. We report the clinicopathologic, immunohistochemical, and molecular cytogenetic findings in a case of uterine embryonal RMS with coexisting PNET that was diagnosed in a 25-year-old female. The tumor broadly involved the cervix and corpus uteri and resulted in uterine inversion. The 2 distinct components each showed classic morphologic features, including cartilage in the RMS component. The unique combination of histologic, immunohistochemical and molecular findings in composite neoplasms of this type raises a question of whether they should be classified and treated as RMS, PNET, or a unique high-grade sarcoma. A variety of clinicopathologic arguments are presented that support the notion that the current neoplasm is an embryonal rhabdomyosarcoma with divergent neuroectodermal and cartilaginous differentiation.

Original languageEnglish (US)
Pages (from-to)656-663
Number of pages8
JournalHuman Pathology
Volume44
Issue number4
DOIs
StatePublished - Apr 1 2013

Fingerprint

Embryonal Rhabdomyosarcoma
Primitive Neuroectodermal Tumors
Uterine Neoplasms
Rhabdomyosarcoma
Neoplasms
Uterine Inversion
Cervix Uteri
Cytogenetics
Sarcoma
Cartilage

Keywords

  • Botryoid embryonal rhabdomyosarcoma
  • Primitive neuroectodermal tumor
  • Rhabdomyosarcoma

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Composite uterine neoplasm with embryonal rhabdomyosarcoma and primitive neuroectodermal tumor components : Rhabdomyosarcoma with divergent differentiation, variant of primitive neuroectodermal tumor, or unique entity? / Cate, Frances; Bridge, Julia A.; Crispens, Marta A.; Keedy, Vicki L.; Troutman, Ashley; Coffin, Cheryl M.; Fadare, Oluwole.

In: Human Pathology, Vol. 44, No. 4, 01.04.2013, p. 656-663.

Research output: Contribution to journalArticle

Cate, Frances ; Bridge, Julia A. ; Crispens, Marta A. ; Keedy, Vicki L. ; Troutman, Ashley ; Coffin, Cheryl M. ; Fadare, Oluwole. / Composite uterine neoplasm with embryonal rhabdomyosarcoma and primitive neuroectodermal tumor components : Rhabdomyosarcoma with divergent differentiation, variant of primitive neuroectodermal tumor, or unique entity?. In: Human Pathology. 2013 ; Vol. 44, No. 4. pp. 656-663.
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