biostudies-literatureUnknown14(2)Suwa T<h4>Rationale</h4>Intraorbital osteomas are incidentally found and occasionally require surgical treatment. Depending on their localisation, a single technique may not provide a sufficient surgical field.<h4>Patient concerns</h4>We report a 16-year-old male with a left upper medial palpable mass.<h4>Diagnosis</h4>Computed tomography revealed a dense bony mass extending from the ethmoid sinus to the superior wall of the frontal sinus, with protrusion into the orbital cavity.<h4>Treatment</h4>The combination of upper fornix transconjunctival and endoscopic transnasal approaches was chosen for the surgical removal procedure.<h4>Outcomes</h4>The two-pathway approaches resulted in the clear removal of the mass. Post-operative recovery was rapid, although a slight restriction of the inferomedialAnnals of maxillofacial surgery248-251https://www.ebi.ac.uk/biostudies/studies/S-EPMC11828069biostudies-literatureCombined Upper Fornix Transconjunctival and Endoscopic Transnasal Approach for Frontoethmoidal Osteoma with Orbital Extension - A Case Report.PMC11828069Morimoto TNishida KMaeda YKitaguchi YSuwa TfalseCombined Upper Fornix Transconjunctival and Endoscopic Transnasal Approach for Frontoethmoidal Osteoma with Orbital Extension - A Case Report.<h4>Rationale</h4>Intraorbital osteomas are incidentally found and occasionally require surgical treatment. Depending on their localisation, a single technique may not provide a sufficient surgical field.<h4>Patient concerns</h4>We report a 16-year-old male with a left upper medial palpable mass.<h4>Diagnosis</h4>Computed tomography revealed a dense bony mass extending from the ethmoid sinus to the superior wall of the frontal sinus, with protrusion into the orbital cavity.<h4>Treatment</h4>The combination of upper fornix transconjunctival and endoscopic transnasal approaches was chosen for the surgical removal procedure.<h4>Outcomes</h4>The two-pathway approaches resulted in the clear removal of the mass. Post-operative recovery was rapid, although a slight restriction of the inferomedial2024-01-01T00:00:00Z2024 Jul-Dec2025-04-05T09:39:31.485Z2025-04-05T09:39:31.485ZS-EPMC118280693995788710.4103/ams.ams_87_23