CT studies of tumors of the skull base, facial skeleton and nasopharynx

1977 ◽  
Vol 1 (3) ◽  
pp. 217-224 ◽  
Author(s):  
J.M. Caillé ◽  
Ph. Constant ◽  
J.L. Renaud-Salis ◽  
A. Dop
Keyword(s):  
Skull Base ◽  
Facial Skeleton ◽  
Ct Studies

Atypical Form of Cervicofacial Actinomycosis Involving the Skull Base and Temporal Bone

2018 ◽  
Vol 128 (2) ◽  
pp. 152-156 ◽  
Author(s):  
Adam McCann ◽  
Sameer A. Alvi ◽  
Jessica Newman ◽  
Kiran Kakarala ◽  
Hinrich Staecker ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Skull Base ◽  
Temporal Bone ◽  
Soft Tissues ◽  
Trauma Surgery ◽  
Oral Antibiotic ◽  
Facial Skeleton ◽  
Atypical Form ◽  
Unsuccessful Treatment ◽  
The Right

Background: Cervicofacial actinomycosis is an uncommon indolent infection caused by Actinomyces spp that typically affects individuals with innate or adaptive immunodeficiencies. Soft tissues of the face and neck are most commonly involved. Actinomyces osteomyelitis is uncommon; involvement of the skull base and temporal bone is exceedingly rare. The authors present a unique case of refractory cervicofacial actinomycosis with development of skull base and temporal bone osteomyelitis in an otherwise healthy individual. Methods: Case report with literature review. Results: A 69-year-old man presented with a soft tissue infection, culture positive for Actinomyces, over the right maxilla. Previous unsuccessful treatment included local debridement and 6 weeks of intravenous ceftriaxone. He was subsequently treated with conservative debridement and a prolonged course of intravenous followed by oral antibiotic. However, he eventually required multiple procedures, including maxillectomy, pterygopalatine fossa debridement, and a radical mastoidectomy to clear his disease. Postoperatively he was gradually transitioned off intravenous antibiotics. Conclusions: Cervicofacial actinomycosis involves soft tissue surrounding the facial skeleton and oral cavity and is typically associated with a history of mucosal trauma, surgery, or immunodeficiency. The patient was appropriately treated but experienced disease progression and escalation of therapy. Although actinomycosis is typically not an aggressive bacterial infection, this case illustrates the need for prompt recognition of persistent disease and earlier surgical intervention in cases of recalcitrant cervicofacial actinomycosis. Chronic actinomycosis has the potential for significant morbidity.

Sagittal and Coronal Dimensions of the Ethmoid Roof: A Radioanatomic Study

2005 ◽  
Vol 19 (4) ◽  
pp. 348-352 ◽  
Author(s):  
Mark A. Zacharek ◽  
Joseph K. Han ◽  
Robert Allen ◽  
Jane L. Weissman ◽  
Peter H. Hwang
Keyword(s):  
Skull Base ◽  
Normative Data ◽  
Sagittal Plane ◽  
Ethmoid Sinus ◽  
Nasal Floor ◽  
Equidistant Points ◽  
The Right ◽  
3D Software ◽  
Anterior Ethmoid Artery ◽  
Ct Studies

Background Understanding the anatomy of the ethmoid roof is critical to safe surgical outcomes. Normative data regarding the height and slope of this region have been somewhat limited, derived primarily from cadaveric coronal computed tomography (CT) studies. With triplanar imaging programs, precise multidimensional measurements of the ethmoid roof are now possible. We present a radioanatomic study to characterize normative sagittal and coronal dimensions of the ethmoid roof. Methods Bilateral measurements were taken in 100 consecutive sinus CT scans using ThinClient 3D software. In the sagittal plane, the height of the ethmoid roof was measured in quadrants at five equidistant points between the frontal beak and sphenoid face, referencing the nasal floor. In the coronal plane, the ethmoid roof was measured at three points at the level of the anterior ethmoid artery and at two points at the junction of the posterior ethmoid and sphenoid sinuses. Results When examined sagittally, the right side showed significantly lower skull base heights in the anterior ethmoid compared with the left side (59.0 mm versus 59.8 mm, p = 0.017; 53.7 mm versus 54.5 mm, p = 0.0004). Coronal measurements of the anterior ethmoid roof showed similar significant differences. The anterior ethmoid roof had greater asymmetries of height compared with the posterior ethmoid roof, which was fairly constant. Conclusion This study provides numerical correlates to accepted concepts regarding the shape and slope of the ethmoid roof. Differences in height of the skull base between right and left sides, especially in the anterior ethmoid sinus, may be an important surgical consideration. The posterior ethmoid roof appears to be relatively constant and should serve as a reliable surgical landmark.

Correlations between the abnormal development of the skull base and facial skeleton growth in anterior synostotic plagiocephaly: the predictive value of a classification based on CT scan examination

2011 ◽  
Vol 27 (9) ◽  
pp. 1431-1443 ◽  
Author(s):  
Sandro Pelo ◽  
Giampiero Tamburrini ◽  
Tito Matteo Marianetti ◽  
Gianmarco Saponaro ◽  
Alessandro Moro ◽  
...  
Keyword(s):  
Ct Scan ◽  
Skull Base ◽  
Predictive Value ◽  
Abnormal Development ◽  
Facial Skeleton

Isolated Bilateral Zygomatic Arch Fractures of the Facial Skeleton Are Associated with Skull Base Fractures

2011 ◽  
Vol 128 (4) ◽  
pp. 962-970 ◽  
Author(s):  
Joseph A. Kelamis ◽  
Gerhard S. Mundinger ◽  
Jeffrey M. Feiner ◽  
Amir H. Dorafshar ◽  
Paul N. Manson ◽  
...  
Keyword(s):  
Skull Base ◽  
Zygomatic Arch ◽  
Facial Skeleton

scholarly journals IDH mutation status in a series of 88 head and neck chondrosarcomas: different profile between tumors of the skull base and tumors involving the facial skeleton and the laryngotracheal tract

2019 ◽  
Vol 84 ◽  
pp. 183-191 ◽  
Author(s):  
Matthias Tallegas ◽  
Élodie Miquelestorena-Standley ◽  
Corinne Labit-Bouvier ◽  
Cécile Badoual ◽  
Arnaud Francois ◽  
...  
Keyword(s):  
Head And Neck ◽  
Skull Base ◽  
Idh Mutation ◽  
Facial Skeleton ◽  
Mutation Status

Endoscopy skull-base resection for ethmoid adenocarcinoma and olfactory neuroblastoma

2011 ◽  
Vol 49 (1) ◽  
pp. 74-79
Author(s):  
Filippo Carta ◽  
Romain Kania ◽  
Elisabeth Sauvaget ◽  
Damien Bresson ◽  
Bernard George ◽  
...  
Keyword(s):  
Skull Base ◽  
Local Control ◽  
Postoperative Radiotherapy ◽  
Disease Free Survival ◽  
Olfactory Neuroblastoma ◽  
Anterior Skull Base ◽  
Facial Skeleton ◽  
Craniofacial Resection ◽  
Free Survival ◽  
Sinonasal Malignancies

Statement of problem: Olfactory neuroblastoma (ON) and ethmoid adenocarcinoma (AC) are rare sinonasal malignancies that often involve the skull base. Standard surgical treatment is craniofacial resection (CFR), which allows for efficient removal but entails significant morbidity and mortality. Because expanded endoscopy nasal approaches are newly developed, we aimed to describe the procedure in patients with ON and AC and compare it with CFR in terms of efficiency and morbidity. Methods: This work reports on a retrospective series of 16 patients with AC and ON treated endoscopically with anterior skull-base resection in a single institution over 9 years. Invasion of the frontal sinus, massive extension to the cerebral parenchyma, spread of the tumour above the orbits or lysis of anterior facial skeleton were contraindications for endoscopy resection. Results: Of the 16 patients, 11 had AC and 5 ON. In total, 37.5% (6) exhibited skull-base invasion. All patients had postoperative radiotherapy. In the early postoperative period, one patient experienced delayed seizure due to a minor subdural hematoma. Two delayed complications were observed: one encephalocele related to inappropriate postoperative care, which required revision surgery, and one extended radionecrosis. Five-year disease-free survival was 83% and 5-year recurrence-free survival 58%. Local control rate was 91% for AC and 100% for ON. Conclusions: With low perioperative morbidity and efficient local control, ethmoidectomy combined with anterior skull-base resection is a promising approach for managing selected cases of AC and ON. These findings need further investigation with prolonged follow-up.

Intraoperative acquisition of three-dimensional imaging for frameless stereotactic guidance during transsphenoidal pituitary surgery using the Arcadis Orbic System

2008 ◽  
Vol 108 (4) ◽  
pp. 746-750 ◽  
Author(s):  
W. Christopher Fox ◽  
Scott Wawrzyniak ◽  
William F. Chandler
Keyword(s):  
Skull Base ◽  
Large Body ◽  
Sella Turcica ◽  
Pituitary Surgery ◽  
Frameless Stereotaxy ◽  
Multiplanar Reconstructions ◽  
Transsphenoidal Pituitary Surgery ◽  
Preoperative Ct ◽  
Stereotactic Navigation ◽  
Ct Studies

Object Intraoperative fluoroscopy has long been used for anatomical localization in transsphenoidal pituitary surgery. More recently, frameless stereotaxy has been used to supplement 2D sagittal radiographs with 3D multiplanar reconstructions. Use of Arcadis Orbic allows both conventional fluoroscopic views and multiplanar reconstructions to be acquired intraoperatively without need for preoperative planning studies. The authors report their initial experience using Arcadis Orbic during transsphenoidal pituitary surgery. Methods To test the system, the authors placed a dehydrated human skull in a radiolucent head holder, and obtained standard 2D fluoroscopic images of the skull base and sella turcica. Arcadis Orbic was then used with frameless stereotaxy to register 3D multiplanar reconstructed images of skull base anatomy. The authors then used Arcadis Orbic in 26 transsphenoidal pituitary tumor resections and compared image quality, accuracy, and ease-of-use to standard techniques. Results Arcadis Orbic 2D fluoroscopic images matched or exceeded the quality of images acquired by standard C-arm machines. Arcadis Orbic multiplanar reconstructions provided excellent images of the skull base when compared with preoperative Stealth computed tomography (CT) studies. Intraoperative frameless stereotactic navigation using Arcadis Orbic was highly accurate and more reliable than registering preoperative CT images. Conclusions Arcadis Orbic provides excellent quality 2- and 3D images during transsphenoidal pituitary surgery, and intraoperative frameless navigation using these images is highly accurate. Arcadis Orbic is easy to use, even in patients with large body habitus, and image acquisition takes no longer than registration during a frameless stereotactic case. Based upon our preliminary experience, Arcadis Orbic precludes the need for preoperative CT studies in patients with pituitary lesions requiring frameless stereotactic navigation.

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