PMC8580597_01
Axial view: Pre-OMCT CT of nasal cavity and sinuses: Interval increase in the mass (9.7 x 4.6 cm) involving right nasal cavity lesion creeping through nasopharynx to skull base without bony erosion, also inferomedially in right orbit and further in right paranasal sinuses.
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Performance Score (PS) of 1 and was given four cycles of Dacarbazine. Post chemotherapy there was further increase in the size (9.7 x 4.6 cm), extent and effect of the right nasal cavity lesion creeping through nasopharynx to skull base without bony erosion, also inferomedially in right orbit and further in right paranasal sinuses (Figure 1).
Axial view: Post 6 months of OMCT: Decrease in size and extent of the solid heterogeneously enhancing mass in the right nasal cavity to about 5.3 x 2.3 cm.
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At 6 months, there was interval decrease in size and extent of the solid heterogeneously enhancing mass in the right nasal cavity to about 5.3 x 2.3 cm (42% decrease as per RECIST 1.1) suggestive of partial response (Figure 2).