Conclusion :
Even though lateral sinus floor elevation is a well-documented
procedure, its complexity is greatly influenced by anatomical and
patient-related factors. A thorough clinical examination completed with
a radiographic assessment with CBCT or CT reconstructions is mandatory
before the intervention. To our knowledge, this is the first published
case of a sinus graft in presence of a lateral wall osteoma. The
management of such obstacles is decided on a case-by-case basis after
evaluation of the benefit/risk ratio.