title: [Peripheral Primitive Neuroectodermal Tumor of the Small Bowel Mesentery - Report of a Case].
abstract: BACKGROUND
  Primitive neuroectodermal tumor or Ewing's sarcoma is a tumor of undifferentiated small round cells that arise from the soft tissues, and is believed to be of neural origin. It occurs most often in children, followed by adolescents and young adults.
  
  
  METHODS
  A case of a 24-year-old patient with ulcerostenosans Ewing's sarcoma of the initial part of the small intestine is presented in our paper. Reviewing the literature and using as an example the case of a female patient with signs of sideropenic anemia caused by primitive neuroectodermal tumor of the small intestine, an attempt was made to clarify the etiology, clinical presentation, diagnosis and therapy with the aim of its rapid detection and treatment.
  
  
  CONCLUSIONS
  Mesenteric primitive neuroectodermal tumor is a rare neoplasm in adults, while it usually occurs in children and young adults. Surgical resection of the lesions with the application of chemotherapy is the main form of treatment of patients suffering from this disease.
authors.forename: Helena
authors.initials: H
authors.lastname: Marić
authors.forename: Radovan
authors.initials: R
authors.lastname: Cvijanović
authors.forename: Igor
authors.initials: I
authors.lastname: Ivanov
authors.forename: Ljiljana
authors.initials: L
authors.lastname: Gvozdenović
authors.forename: Dejan
authors.initials: D
authors.lastname: Ivanov
authors.forename: Nenad
authors.initials: N
authors.lastname: Lalović
mesh_terms: D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000473:pathology*; D008643:Mesentery / Q000473:pathology*; D018241:Neuroectodermal Tumors, Primitive, Peripheral / Q000473:pathology*; D012512:Sarcoma, Ewing / Q000473:pathology*; D055815:Young Adult