{"doi":"10.3171/case21361","title":"Juvenile psammomatoid ossifying fibroma of the parietal bone and review of calvarial presentations: illustrative case","abstract":"<jats:sec>\n                    <jats:title>BACKGROUND</jats:title>\n                    <jats:p>Juvenile psammomatoid ossifying fibroma (JPOF) is an uncommon benign fibro-osseous lesion that only rarely presents in the calvaria.</jats:p>\n                  </jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS</jats:title>\n                    <jats:p>The authors reported a case of JPOF in the left parietal bone of a 20-year-old patient and reviewed the 27 other cases of JPOF occurring in the calvaria as reported in the literature.</jats:p>\n                  </jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS</jats:title>\n                    <jats:p>\n                      JPOF rarely presents in the calvaria, and because diagnosis is a histopathologic one, clinicians should consider this entity when presented with a lytic, expansile mass on imaging. Little is known about the molecular mechanisms driving development of JPOF.\n                      <jats:italic>MDM2</jats:italic>\n                      amplification may play a role, although this was not seen in the case presented herein.\n                    </jats:p>\n                  </jats:sec>","journal":"Journal of Neurosurgery: Case Lessons","year":2021,"id":688332,"datarank":0.16479184330021646,"base_score":1.0986122886681096,"endowment":1.0986122886681096,"self_citation_contribution":0.16479184330021646,"citation_network_contribution":0.0,"self_endowment_contribution":0.16479184330021646,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":2,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1067429,"name":"Julio D. Montejo","orcid":"0000-0003-2166-4861","position":1,"is_corresponding":false},{"id":414412,"name":"Darcy A. Kerr","orcid":"0000-0002-3228-2044","position":2,"is_corresponding":false},{"id":900588,"name":"Jennifer Hong","orcid":"0000-0002-6680-0495","position":3,"is_corresponding":false},{"id":1798205,"name":"Robert T. Chung","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Juvenile psammomatoid ossifying fibroma of the parietal bone and review of calvarial presentations: illustrative case","abstract":"<jats:sec>\n                    <jats:title>BACKGROUND</jats:title>\n                    <jats:p>Juvenile psammomatoid ossifying fibroma (JPOF) is an uncommon benign fibro-osseous lesion that only rarely presents in the calvaria.</jats:p>\n                  </jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS</jats:title>\n                    <jats:p>The authors reported a case of JPOF in the left parietal bone of a 20-year-old patient and reviewed the 27 other cases of JPOF occurring in the calvaria as reported in the literature.</jats:p>\n                  </jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS</jats:title>\n                    <jats:p>\n                      JPOF rarely presents in the calvaria, and because diagnosis is a histopathologic one, clinicians should consider this entity when presented with a lytic, expansile mass on imaging. Little is known about the molecular mechanisms driving development of JPOF.\n                      <jats:italic>MDM2</jats:italic>\n                      amplification may play a role, although this was not seen in the case presented herein.\n                    </jats:p>\n                  </jats:sec>","is_dataset_classified":null,"base_score":1.0986122886681096,"endowment":1.0986122886681096,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"35855183","pmcid":"PMC9265227","openalex_id":"https://openalex.org/W3196729755","authors":[],"funders":[],"total_grants":0,"fwci":0.0,"citation_percentile":0.15317721,"influential_citations":1,"citation_trend":[{"year":2025,"count":2}],"oa_status":"hybrid","license":"cc-by","oa_locations":[{"url":"https://thejns.org/downloadpdf/journals/j-neurosurg-case-lessons/2/10/article-CASE21361.pdf","host_type":"journal"},{"url":"https://thejns.org/downloadpdf/journals/j-neurosurg-case-lessons/2/10/article-CASE21361.pdf","host_type":"BRONZE"},{"url":"https://thejns.org/downloadpdf/journals/j-neurosurg-case-lessons/2/10/article-CASE21361.pdf","host_type":"publisher"},{"url":"https://thejns.org/view/journals/j-neurosurg-case-lessons/2/10/article-CASE21361.xml","host_type":"publisher"},{"url":"https://thejns.org/downloadpdf/journals/j-neurosurg-case-lessons/2/10/article-CASE21361.xml","host_type":"publisher"},{"url":"https://doi.org/10.3171/case21361","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/35855183","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/9265227","host_type":"repository"},{"url":"https://europepmc.org/articles/PMC9265227","host_type":"Europe_PMC"},{"url":"https://europepmc.org/articles/PMC9265227?pdf=render","host_type":"Europe_PMC"}],"fields_of_study":["Bone Tumor Diagnosis and Treatments","Oral and Maxillofacial Pathology","Soft tissue tumor case studies","Medicine"],"mesh_terms":[],"keywords":["Calvaria","Medicine","Parietal bone","Ossifying fibroma","Pathology","Anatomy","Skull","Lesion","Biology","Ct = Computed Tomography","Ema = Epithelial Membrane Antigen","Fish = Fluorescence In Situ Hybridization","Juvenile Psammomatoid Ossifying Fibroma","Mri = Magnetic Resonance Imaging","Jpof = Juvenile Psammomatoid Ossifying Fibroma","Pr = Progesterone Receptor","Cof = Cemento-Ossifying Fibroma","Juvenile Active Ossifying Fibroma","Jpof"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[{"name":"doi"}],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-19T15:14:53.018097Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}