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  2. Frontal sinus - Wikipedia

    en.wikipedia.org/wiki/Frontal_sinus

    Frontal sinuses are rarely symmetrical as the septum between them frequently deviates to either side of the midline. [3] [1] The two sinuses also vary in extent compared to one another. [2] Their size of the frontal sinuses is highly variable. [2] Rarely, one or both sinuses is hypoplastic [1] or even absent. [1] [2]

  3. Silent sinus syndrome - Wikipedia

    en.wikipedia.org/wiki/Silent_sinus_syndrome

    Silent sinus syndrome is a subtype of stage three chronic maxillary atelectasis. The distinguishing factor is that in silent sinus syndrome, there is an absence of sinusitis symptoms. [ 3 ] [ 4 ] [ 5 ] To be clear, chronic maxillary sinusitis may be a primary causitive factor in a significant number of silent sinus syndrome cases, it just may ...

  4. Waters' view - Wikipedia

    en.wikipedia.org/wiki/Waters'_view

    Maxillary sinuses. Frontal sinuses, seen with an oblique view. Ethmoidal cells. Sphenoid sinus, seen through the open mouth. Odontoid process, where if it is just below the mentum, it confirms adequate extension of the head. The frontal sinus may not show the frontal sinus in detail. [1]

  5. Hajdu–Cheney syndrome - Wikipedia

    en.wikipedia.org/wiki/Hajdu–Cheney_syndrome

    Hajdu–Cheney syndrome causes many issues with an individual's connective tissues. Some general characteristics of an individual with Hajdu–Cheney syndrome include bone flexibility and deformities, short stature, delayed acquisition of speech and motor skills, dolichocephalic skull, Wormian bone, small maxilla, hypoplastic frontal sinuses, basilar impression, joint laxity, bulbous finger ...

  6. Orbital x-ray - Wikipedia

    en.wikipedia.org/wiki/Orbital_x-ray

    Orbital x-ray or orbital radiography is an x-ray of both left and right eye sockets, to include the Frontal Sinuses and Maxillary Sinuses. Positioning

  7. Frontonasal dysplasia - Wikipedia

    en.wikipedia.org/wiki/Frontonasal_dysplasia

    Frontonasal dysplasia (FND) is a congenital malformation of the midface. [1] For the diagnosis of FND, a patient should present at least two of the following characteristics: hypertelorism (an increased distance between the eyes), a wide nasal root, vertical midline cleft of the nose and/or upper lip, cleft of the wings of the nose, malformed nasal tip, encephalocele (an opening of the skull ...

  8. Frontonasal duct - Wikipedia

    en.wikipedia.org/wiki/Frontonasal_duct

    The frontonasal duct is a duct through which either frontal sinus drains into the nasal cavity. [2] [3] Each frontal sinus opens into the frontonasal duct by an opening (the opening of frontal sinus or frontal sinus aperture [4]) on the inferomedial part [3] of the floor of the sinus. [4]

  9. Dysosteosclerosis - Wikipedia

    en.wikipedia.org/wiki/Dysosteosclerosis

    Skull base sclerosis, periorbital sclerosis, hypoplastic mandibular condyle, and absent paranasal or frontal sinuses are present in rare cases. [6] [7] It is also reported that individuals may also have pelvic abnormalities. This includes the development of narrow iliac wings, as well as widened femoral necks. However, incidence of both ...