title: Primary bone tumours and tumour-like lesions in children in Zaria, Nigeria.
abstract: BACKGROUND
  Studies on bone neoplasms are generally scanty globally and more so in children. Primary bone tumours and tumour-like lesions in children have not been reported from Zaria.
  
  
  OBJECTIVE
  To determine the relative frequencies, sex and age distributions, and anatomical sites of occurrence of primary bone tumours and tumour-like lesions in children in Zaria.
  
  
  METHODS
  A retrospective review of histopathology reports of 40 children with bone tumours and tumour-like lesions in 11 years of age.
  
  
  RESULTS
  Benign tumours accounted for 12 (30%) of the 40 tumours reviewed (osteoma 2.5%, osterochondroma 22.5%, fibroma 5%); while malignant tumours occurred in 19 (47.5%) (osteosarcoma 5%, Burkitt's lymphoma 37.5%, diffuse lympholastic lymphoma 5%). Tumour-like lesions accounted for 9 (22.5%), all fibrous dysplasia. Out of 40 tumours, 23 (57.5%) occurred in males and 17 (422.5%) in females. The majority of tumours, 45% occurred in the age group of 10-15 years, followed by 15 (37.5) occurring in the 5-9 years age range. The most common malignany was Burkitt's lymphoma 15 (37.5%). Maxilla was the most common site for malignant (30%) and benign tumours (12.5%).
  
  
  CONCLUSIONS
  This study has shown that, primary bone tumours are relatively uncommon in children in our setting.
authors.affiliation: Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria.
authors.forename: Abdullahi
authors.initials: A
authors.lastname: Mohammed
authors.forename: Malami A
authors.initials: MA
authors.lastname: Sani
authors.forename: Isah A
authors.initials: IA
authors.lastname: Hezekiah
authors.forename: Afolayan A O
authors.initials: AA
authors.lastname: Enoch
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D000367:Age Factors; D001859:Bone Neoplasms / Q000453:epidemiology* / Q000473:pathology; D002648:Child; D005260:Female; D006784:Hospitals, Teaching; D006801:Humans; D015994:Incidence; D008223:Lymphoma / Q000453:epidemiology* / Q000473:pathology; D008297:Male; D018213:Neoplasms, Bone Tissue / Q000453:epidemiology* / Q000473:pathology; D009549:Nigeria / Q000453:epidemiology; D012189:Retrospective Studies; D017678:Sex Distribution; D012737:Sex Factors