title: [Iatrogenic metastasis of pineal tumors].
abstract: Malignant pineal tumors (PT) tend to metastasize. In rare cases, this process is provoked by surgery. This paper describes four cases of iatrogenic metastasis of PT. Metastasis occurred: a) along the surgical approach path after tumor removal in 2 cases; b) along the biopsy cannula path; and c) along the ventriculoperitoneal catheter into the abdomen. The sources of metastases were pineoblastoma (n = 1), malignant teratoma (n = 1), germinoma (n = 1), and malignant germ-cell tumor of unknown genesis (n = 1). To prevent this complication due to high-grade PT, such as malignant germ-cell tumors and pineoblastomas, radiation of the whole brain, besides the sites of a tumor should be performed and, in some cases, in combination with chemotherapy.
authors.forename: D I
authors.initials: DI
authors.lastname: Pitskhelauri
authors.forename: A N
authors.initials: AN
authors.lastname: Konovalov
authors.forename: V N
authors.initials: VN
authors.lastname: Azizian
authors.forename: V N
authors.initials: VN
authors.lastname: Kornienko
authors.forename: A G
authors.initials: AG
authors.lastname: Korshunov
authors.forename: A G
authors.initials: AG
authors.lastname: Melikian
authors.forename: V A
authors.initials: VA
authors.lastname: Loshakov
authors.forename: N K
authors.initials: NK
authors.lastname: Serova
mesh_terms: D000293:Adolescent; D001932:Brain Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D002675:Child, Preschool; D005770:Gastrointestinal Neoplasms / Q000473:pathology / Q000556:secondary; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D019635:Neurosurgical Procedures / Q000009:adverse effects*; D010870:Pineal Gland; D011183:Postoperative Complications / Q000473:pathology; D013724:Teratoma / Q000473:pathology / Q000556:secondary / Q000601:surgery