title: Pulmonary metastasis of endometrial stromal sarcoma.
abstract: Multiple round opacities suggestive of metastatic lung tumors were incidentally found on a chest x-ray film in a 43-year-old woman. The patient underwent hysterectomy for "myoma uteri" three years previously. Extensive examinations could not specify the primary neoplastic lesions. Morphological characteristics of the thracoscopically resected lung tumors suggested low-grade endometrial stromal sarcoma (ESS), and immunostaining revealed that the tumor cells were positive for progesterone and estrogen receptors, CD10 and vimentin, confirming a diagnosis of ESS. ESS is an uncommon uterine neoplasm, however, may be mistaken as benign tumors such as epithelioid leiomyoma, and occasionally metastasizes to remote organs such as lungs even after long disease-free period, posing diagnostic challenge.
authors.affiliation: Department of Medicine, Kurume University School of Medicine, Kurume, Japan. kogat@med.kurume-u.ac.jp
authors.forename: Takeharu
authors.initials: T
authors.lastname: Koga
authors.forename: Kimio
authors.initials: K
authors.lastname: Ushijima
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Kage
authors.forename: Masao
authors.initials: M
authors.lastname: Ichiki
authors.forename: Takao
authors.initials: T
authors.lastname: Kitajima
authors.forename: Yuko
authors.initials: Y
authors.lastname: Narita
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Mizoguchi
authors.forename: Mikiko
authors.initials: M
authors.lastname: Hanada
authors.forename: Ryu
authors.initials: R
authors.lastname: Ehara
authors.forename: Munetsugu
authors.initials: M
authors.lastname: Nishimura
authors.forename: Shinzo
authors.initials: S
authors.lastname: Takamori
authors.forename: Hisamichi
authors.initials: H
authors.lastname: Aizawa
mesh_terms: D000328:Adult; D016889:Endometrial Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary*; D018203:Sarcoma, Endometrial Stromal / Q000473:pathology*