Esthesioneuroblastoma CT: Difference between revisions

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==Overview==
==Overview==
 
On head and neck CT, esthesioneuroblastoma is characterized by soft tissue attenuation, with relatively homogenous enhancement.<ref name="radio"> Esthesioneuroblastoma. Radiopedia(2015) http://radiopaedia.org/articles/olfactory-neuroblastoma Accessed on January 25, 2016</ref>
==CT==
==CT==
The tumours are slow growing and the choice of imaging will depend on the tumour's size. They begin as masses in the superior olfactory recess and initially involve the anterior and middle ethmoid air-cells on one side1-2. As they grow, they tend to destroy surrounding bone, and can extend in any direction. This invasion may be superiorly into the anterior cranial fossa, laterally into the orbits and across the midline into the contralateral nasal cavity. They can also obstruct the ostia of paranasal sinuses resulting in opacification of the sinus with secretions 2.
CT is particularly useful in assessing bony destruction, although it cannot distinguish [[olfactory]] [[neuroblastomas]] from other tumors that arise in the same region. The mass is of soft tissue attenuation, with relatively homogeneous enhancement. Focal [[calcification]] are occasionally present. These [[tumors]] are relatively slow growing and thus, the bony margins are often remodeled and resorbed, rather than being aggressively destroyed.<ref name="radio"> Esthesioneuroblastoma. Radiopedia(2015) http://radiopaedia.org/articles/olfactory-neuroblastoma Accessed on January 25, 2016</ref>
<gallery>
Axial non contrast esthesioneuroblastoma.jpeg|Axial non contrast CT of esthesioneuroblastoma<ref name="radio1">Image courtesy of Dr. Bruno Di Muzio [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/esthesioneuroblastoma-3]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>
Coronal bone window.jpeg|Coronal bone window CT scan of esthesioneuroblastoma<ref name="radio1"> Image courtesy of Dr. Bruno Di Muzio [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/esthesioneuroblastoma-3]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>
Coronal non-contrast esthesioneuroblastoma.jpeg|Coronal non contrast CT of esthesioneuroblastoma<ref name="radio1">Image courtesy of Dr. Bruno Di Muzio [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/esthesioneuroblastoma-3]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>
Sagittal non contrast.jpeg|Sagittal non contrast CT of esthesioneuroblastoma<ref name="radio1"> Image courtesy of Dr. Bruno Di Muzio [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/esthesioneuroblastoma-3]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>
</gallery>


Particular attention should be paid to the presence of cervical and retropharyngeal nodal metastases which are present in 10-44% of cases at diagnosis


CT is particularly useful in assessing bony destruction, although it cannot distinguish olfactory neuroblastomas from other tumors that arise in the same region. The mass is of soft tissue attenuation, with relatively homogeneous enhancement 3. Focal calcification are occasionally present 3.
These tumors are relatively slow growing and thus, the bony margins are often remodeled and resorbed, rather than being aggressively destroyed
The tumors are slow growing and the choice of imaging will depend on the tumor's size. They begin as masses in the superior olfactory recess and initially involve the anterior and middle ethmoid air-cells on one side1-2. As they grow, they tend to destroy surrounding bone, and can extend in any direction. This invasion may be superiorly into the anterior cranial fossa, laterally into the orbits and across the mid line into the contralateral nasal cavity. They can also obstruct the ostia of paranasal sinuses resulting in opacification of the sinus with secretions 2.
Particular attention should be paid to the presence of cervical and retropharyngeal nodal metastases which are present in 10-44% of cases at diagnosis
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
{{Central nervous system tumors}}


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[[Category:Oncology]]
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Latest revision as of 22:23, 26 November 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [3]

Overview

On head and neck CT, esthesioneuroblastoma is characterized by soft tissue attenuation, with relatively homogenous enhancement.[1]

CT

CT is particularly useful in assessing bony destruction, although it cannot distinguish olfactory neuroblastomas from other tumors that arise in the same region. The mass is of soft tissue attenuation, with relatively homogeneous enhancement. Focal calcification are occasionally present. These tumors are relatively slow growing and thus, the bony margins are often remodeled and resorbed, rather than being aggressively destroyed.[1]

  • Axial non contrast CT of esthesioneuroblastoma[2]

    Axial non contrast CT of esthesioneuroblastoma[2]

  • Coronal bone window CT scan of esthesioneuroblastoma[2]

    Coronal bone window CT scan of esthesioneuroblastoma[2]

  • Coronal non contrast CT of esthesioneuroblastoma[2]

    Coronal non contrast CT of esthesioneuroblastoma[2]

  • Sagittal non contrast CT of esthesioneuroblastoma[2]

    Sagittal non contrast CT of esthesioneuroblastoma[2]


References

  1. ↑ 1.0 1.1 Esthesioneuroblastoma. Radiopedia(2015) http://radiopaedia.org/articles/olfactory-neuroblastoma Accessed on January 25, 2016
  2. ↑ 2.0 2.1 2.2 2.3 Image courtesy of Dr. Bruno Di Muzio Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC

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