The danger of a small cyst in the right sieve sinus needs to be determined by the size and location of the mass. When the mass is small and not closely related to surrounding structures, the risk is often small and the symptoms are not obvious. When the swelling is large and closely related to neighboring structures and organs, compression symptoms may occur, such as diplopia, dizziness, eyeball protrusion and other hazards. 1. Compression of nerves: a small cyst in the right sieve sinus is a sinus lesion, which may be related to sinus blockage, and if the cyst is too large, it will compress the optic nerve. 2. Diplopia: The cysts of the right sieve sinus cyst can invade the eye and cause diplopia and eye displacement. 3. Dizziness: The right sieve sinus cyst occurs within the sieve bone and can cause headaches and dizziness. 4. Eye protrusion: eye protrusion is due to the cyst is too large and thus presses the eyeball, so that the eyeball protrudes outward and causes facial deformity. It is recommended that patients with small cysts on the right side of the sieve sinus be diagnosed in the hospital and receive standardized treatment under the guidance of a professional doctor.