Collision Tumor of Meningioma and Malignant Astrocytoma

Khalatbari, Mahmoud Reza; Borghei-Razavi, Hamid; Shayanfar, Nasrin; Behzadi, Ashkan Heshmatzade; Sepehrnia, Abolghassem

doi:10.1159/000321596

Cited by 19 publications

(17 citation statements)

References 34 publications

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“…Two articles were written in Persian [8, 12], whereas the remaining 33 were written in English. Most studies (n = 27) took place in Tehran province [4–5, 8, 11–13, 15–23, 25–29, 31–37] in hospitals and centers affiliated with the three main medical universities in Tehran: Tehran University of Medical Sciences (n = 16) [4–5, 11, 13, 16–17, 19–22, 26, 28–29, 31–32, 37], Shahid Beheshti University of Medical Sciences (n = 6) [12, 15, 18, 25, 27, 34,], Iran University of Medical Sciences (n = 4) [8, 23, 35, 36], and Army University of Medical Science (n = 1) [33]. Only four articles [18, 23, 26, 34] stated that approval by an ethics committee had been obtained.…”

Section: Resultsmentioning

confidence: 99%

Comprehensive analysis of Iranian reports of pediatric central nervous system tumors

Mehrvar

Akbari

et al. 2017

Childs Nerv Syst

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Purpose Iran lacks a national registry reporting the data of central nervous system (CNS) tumors in children. Consequently, treatment success and failure rates are unknown, and a centralized system for disease-management recommendations does not exist. Methods To critically evaluate the current state of pediatric CNS tumor studies and reporting in Iran, we performed an extensive retrospective analysis of all known reports identified with multiple search engines. Results Of 409 initially retrieved articles, we evaluated 123 matching our inclusion criteria. We further narrowed these reports to 74 by excluding studies pertaining to adult patients only, non-CNS tumors, or brain metastases. We also excluded studies that were performed outside of Iran or that did not contain relevant data from our analysis. We divided the remaining studies into those describing exclusively pediatric patients (3,484 patients) and those describing mixed populations of adults and children (18,641 patients). In total, our analysis included 22,125 patients. Conclusions We identified many limitations in the reporting of studies describing the treatment or prevalence of CNS tumors in children in Iran. Our results may guide future efforts in Iran to improve the care for children with CNS tumors and may provide a valuable template for other comprehensive country- and disease-specific retrospective analyses.

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Section: Resultsmentioning

confidence: 99%

Comprehensive analysis of Iranian reports of pediatric central nervous system tumors

Mehrvar

Akbari

et al. 2017

Childs Nerv Syst

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“…Nevertheless, molecular features suggest a monoclonal tumor origin [18,19]. The second hypothesis is that the oligodendroglioma and sarcomatous tumor might have coexisted from before the first operation [20][21][22]. However, by following the intensive reexamination of the first radiological images and specimens, we could find no evidence that the sarcomatous components coexisted.…”

Section: Discussionmentioning

confidence: 79%

Sarcoma-like tumor originating from oligodendroglioma

et al. 2016

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We present a case of sarcoma occurring at a site of resected oligodendroglioma without preceding radiotherapy or chemotherapy. Oligosarcoma occurring at sites of resected oligodendroglioma or anaplastic oligodendroglioma with sarcomatous components are rare. Although meningioma or sarcoma-like lesions are sometimes reported after glioma-targeted radiotherapy, those without preceding radiotherapy are quite rare. Moreover, cases of sarcoma without oligodendroglial components occurring at a site of resected oligodendroglioma have never been reported. In this case, fluorescent in situ hybridization analysis revealed 1p/19q co-deletion in both the first tumor and second tumors. Additionally, immunohistochemistry revealed mutated isocitrate dehydrogenase 1 in both tumors. Taken together, these findings suggest a monoclonal tumor origin. Consequently, this case may indicate a new mechanism of development of sarcomatous lesions occurring at the site of a resected glioma.

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“…YJ Lu et al (2007) suggested that avoiding the complications associated with the transcranial approaches, extended transsphenoidal surgery might be a good alternative choice for approaching suprasellar meningioma and pituitary adenoma simultaneously (20). The ideal approach for treatment of such concomitant tumors is not clear due to lack of adequate experience in the literature (5,11,13,(22)(23)(24)(27)(28)(29)(30)(31)(32). Visual impairment was the main remaining complaint of both our patients after attempting to treat the PA either medically or surgically.…”

Section: Discussionmentioning

confidence: 99%

“…Concurrent adjacent double tumors in other locations of central nervous system (CNS) are even more implying the effect of unknown oncogenic factors (7). In this communication, we do not intend to report collision 'intrasellar' pathologies (12)(13)(14) but two cases of concomitant brain tumors (CCBT) are reported. Both tumors occurred in the sellar region.…”

Section: Background and Importancementioning

confidence: 97%

Coexisting Pituitary Adenoma and Suprasellar Meningioma: A Coincidence or Causation Effect? Report of Two Cases and Review of Literature

Mortazavi¹,

Shirani²,

Saeedinia³

et al. 2015

IrJNS

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Background and Importance:The coexistence of pituitary adenoma and another type of brain tumor is a very rare clinical scenario. Even though such a presentation can be an incidental event but the possible pathogenesis of coexistence of different lesions in the sella and suprasellar region has not yet been elucidated. Case Presentation: Two cases of concomitant sellar and suprasellar region tumors are reported. A 37-year-old lady with Prolactinoma and a suprasellar meningioma and a 42-year-old Acromegalic man with suprasellar meningioma and a pituitary adenoma (PA). Conclusion Both meningiomas were removed transcranially while the Prolactinoma could be managed medically and the growth hormone (GH) secreting adenoma was removed trans-sphenoidally. The visual problems and hormonal imbalances of both patients improved postoperatively and there has been no sign of recurrence of the lesions after a mean of five years follow up. The literature is reviewed on this topic and the possible pathogenesis and management protocol of similar lesions are discussed.

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Collision Tumor of Meningioma and Malignant Astrocytoma

Cited by 19 publications

References 34 publications

Comprehensive analysis of Iranian reports of pediatric central nervous system tumors

Comprehensive analysis of Iranian reports of pediatric central nervous system tumors

Sarcoma-like tumor originating from oligodendroglioma

Coexisting Pituitary Adenoma and Suprasellar Meningioma: A Coincidence or Causation Effect? Report of Two Cases and Review of Literature

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