Skip to main content

Odontogenic orbital cellulitis associated with cavernous sinus thrombosis and pulmonary embolism: a case report



This case illustrates the importance of prompt assessment and treatment of orbital cellulitis. In fact the ocular signs and symptoms may be associated with systemic complications which should be investigated and identified as soon as possible to avoid a poor prognosis.

Case presentation

A 46-year-old white woman presented to our emergency room with proptosis, ophthalmoplegia, and conjunctival chemosis of her left eye. An ophthalmologist, having diagnosed orbital cellulitis in her left eye, suspected a cavernous sinus thrombosis. Hematochemical and radiological examinations confirmed the cavernous sinus thrombosis and also showed septic pulmonary embolism. A blood culture indicated Streptococcus constellatus, which is a member of the Peptostreptococcus family, a saprophyte of the oral mucosa that can be pathogenic in immunocompromised persons. The odontogenic origin was then confirmed by dental radiography which showed a maxillary abscess. Her eye signs regressed after antibiotic and anticoagulant therapy.


This complex case shows the importance of a multidisciplinary approach for the management of orbital cellulitis, for the prompt diagnosis and treatment of eye injuries and possible complications, so as to avoid serious and permanent sequelae.

Peer Review reports


This case illustrates the importance of prompt assessment and treatment of orbital cellulitis (OC). This infection can lead to abscess formation, blindness, or death and typically originates from sinus infections or cutaneous lesions [1, 2]. However, this patient’s infection originated from a very atypical location: a dental infection. Furthermore, the associated cavernous sinus thrombosis (CST) and pulmonary embolism (PE) are unusual complications. CST and proptosis were caused by retrograde thrombophlebitic diffusion, due to the venous drainage of the head and neck. The lung lesions were caused by septic emboli [3].

This case highlights the need for a multidisciplinary approach and radiological support in the diagnosis and treatment of OC, which can sometimes be the first sign of septic spread.

Case presentation

A 46-year-old white woman presented to our emergency department with facial pain, eyelid swelling, and proptosis with ophthalmoplegia in her left eye (LE), suggesting unilateral OC, and normal vital signs parameters. These signs had been present for 6 hours and started with ophthalmoplegia by eye movements. She had a history of dyslipidemia and hypertension and was receiving drug therapy; she had no fever, sinusitis, or facial skin infections in the previous days.

Given the absence of other associated issues an ophthalmologic evaluation was initially requested. Her best corrected visual acuity in both eyes was 20/20 with intraocular pressure 15 mmHg, and there was no detectable afferent pupillary defect. Her right eye was normal. Her LE had substantial chemosis and hyperemia of the conjunctiva, with exacerbation of the ophthalmoplegia by eye movements. A fundus examination of her LE was normal. Palpation of her left orbital area generated significant crackles but also revealed major pulsation in the scanned region. An urgent non-contrast-enhanced computed axial tomography (NCCAT) of her brain and orbits showed a dense and distended superior ophthalmic vein on the left side, with periorbital swelling. Contrast-enhanced computed tomography (CECT) confirmed the presence of a thrombus in her superior ophthalmic vein, as a filling defect in the late phase, and also showed a non-fat density filling defect in the ipsilateral part of the cavernous sinus (Fig. 1). Finally, contrast-enhanced magnetic resonance imaging (CEMRI) confirmed the distended cavernous sinus and superior ophthalmic vein with the non-fat density filling defect (Fig. 2).

Fig. 1
figure 1

Contrast-enhanced computed tomography. Distended superior ophthalmic vein on the left side (arrow), with periorbital swelling

Fig. 2
figure 2

Contrast-enhanced magnetic resonance imaging. a A non-fat density filling defect in the left side of the cavernous sinus. b Coronal plane, periorbital swelling (arrow)

The day after she started to develop dyspnea an arterial blood gas test was done. The findings of hypocapnia and hypoxemia suggested PE, so CECT with the PE protocol was done, showing massive bilateral pulmonary artery thrombosis and a lung infarct in the superior segment of the basal lobe of her right lung (Fig. 3).

Fig. 3
figure 3

Contrast-enhanced computed tomography pulmonary embolism protocol. Massive bilateral thrombosis in the main pulmonary arteries (arrows)

She had neutrophilia, with a total white cell count of 18.1 × 109/liter and elevated C-reactive protein of 341 mg/liter. Blood culture was positive for Streptococcus constellatus, a member of the Peptostreptococcus family, a saprophyte of the oral mucosa that can be pathogenic in immunocompromised persons, but human immunodeficiency virus (HIV) testing was negative. Dental panoramic images confirmed a maxillary abscess.

She was prescribed a cycle of intravenously administered antibiotics (piperacillin/tazobactam) and anticoagulation therapy with heparin for 10 days, after which she no longer had ophthalmoplegia and periorbital edema. A radiological orbit CECT showed that the diameter of her superior ophthalmic vein on the left and the signal of the fatty periorbital tissue were both normal (Fig. 4). Her white blood cell count normalized. She was discharged from hospital after 15 days with orally administered antibiotic therapy to be taken for 1 month. The affected teeth were extracted after 3 weeks from the onset of ocular symptoms.

Fig. 4
figure 4

Computed tomography of the brain. Regular diameter of the superior ophthalmic vein on the left (arrow) and regular signal of the fatty periorbital tissue

At 1-month follow-up she no longer had shortness of breath. A chest CECT check with the PE protocol confirmed there was no evidence of thrombosis in her main pulmonary arteries.


OC can be caused by primary infection of the sinuses, skin, or teeth. Nearly two thirds of cases, 64%, are from primary sinus infection, which is the most common cause of orbital inflammation, and most of these are of bacterial origin [4]; 16% of cases come from cutaneous lesions, such as eczema, furuncles, or facial cellulitis [4]. Odontogenic OC (OOC) is a less frequent but important cause of orbital infection, with a poor prognosis. In a prior series, 45.8% of patients with OOC had final vision of light perception or worse [5].

The most common pathway of spread of OOC infection is through the paranasal sinuses; less common is the spread from premaxillary soft tissues to the orbit [6].

The difficulty of this case was that the patient manifested no odontogenic problems and did not use immunosuppressive therapies. The panoramic scan was in fact requested only after identification of the causal pathogen, because it is a commensal of the oral mucosa [7].

CST is a rare but potentially devastating complication of OOC and is secondary to thrombophlebitis in the ophthalmic vein. The valveless superior and inferior ophthalmic veins are the first portal for the extension of infection from the facial sinuses to the cavernous sinus [8].

PE could be caused by systemic infection which may induce secondary inflammatory and procoagulant responses. Inflammatory cytokines are capable of activating coagulation while thrombin can stimulate inflammatory pathways [9]. This joint cascade of inflammation and coagulation results in endovascular injury and microvascular thrombosis.


The case reported illustrates the importance of a complete eye examination with careful evaluation of ocular adnexa and palpation of the periorbital area. It is also important to identify the causes of OC and systemic complications as early as possible to avoid a poor prognosis. Although our patient had only ocular signs and symptoms, the multidisciplinary approach achieved a rapid diagnosis and treatment of OOC, CST, and PE, avoiding serious and permanent sequelae such as venous brain ischemia and septicemia.



Contrast-enhanced computed tomography


Contrast-enhanced magnetic resonance imaging


Cavernous sinus thrombosis


Left eye


Non-contrast-enhanced computed axial tomography


Orbital cellulitis


Odontogenic orbital cellulitis (OOC)


Pulmonary embolism


  1. Blake FA, Siegert J, Wedl J, Gbara A, Schmelzle R. The acute orbit: etiology, diagnosis, and therapy. J Oral Maxillofac Surg. 2006;64:87–93.

    Article  PubMed  Google Scholar 

  2. Zachariades N, Vairaktaris E, Mezitis M, Rallis G, Kokkinis C, Moschos M. Orbital abscess: visual loss following extraction of a tooth – case report. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005;100:e70–3.

    Article  PubMed  Google Scholar 

  3. Bullock JD, Fleishman JA. The spread of odontogenic infections to the orbit: diagnosis and management. J Oral Maxillofac Surg. 1985;43:749–55.

    Article  CAS  PubMed  Google Scholar 

  4. Gans H, Sekula J, Wlodyka J. Treatment of acute orbital complications. Arch Otolaryngol. 1974;100:329–32.

    Article  CAS  PubMed  Google Scholar 

  5. Youssef OH, Stefanyszyn MA, Bilyk JR. Odontogenic orbital cellulitis. Ophthal Plast Reconstr Surg. 2008;24:29–35.

    Article  PubMed  Google Scholar 

  6. Kaban LB, McGill T. Orbital cellulitis of dental origin: differential diagnosis and the use of computed tomography as a diagnostic aid. J Oral Surg. 1980;38:682–5.

    CAS  PubMed  Google Scholar 

  7. Berenholz L, Kessler A, Shlomkovitz N, et al. Superior ophthalmic vein thrombosis: complication of ethmoidal rhinosinusitis. Arch Otolaryngol Head Neck Surg. 1981;24:95–7.

    Google Scholar 

  8. Standring S, Gray H. Gray’s anatomy, the anatomical basis of clinical practice. London: Churchill Livingstone; 2008. ISBN 0443066841.

    Google Scholar 

  9. Esmon CT, Taylor Jr FB, Snow TR. Inflammation and coagulation: linked processes potentially regulated through a common pathway mediated by protein C. Thromb Haemost. 1991;66:160–5.

    CAS  PubMed  Google Scholar 

Download references


Supported by Retina 3000 Foundation. This study received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.


No funding was obtained for this study.

Availability of data and materials

All data supporting our findings are provided in the manuscript.

Authors’ contributions

DA, EN, and AP contributed to conception and design; DA, EN, and AP contributed to data acquisition; all authors contributed to interpretation of data; all authors drafted the article and approved its final version.

Competing interests

The authors declare that they have no competing interests.

Consent for publication

Written informed consent was obtained from the patient for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.

Ethics approval and consent to participate

The local ethics committee ruled that no formal ethics approval was required in this particular case.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Author information

Authors and Affiliations


Corresponding author

Correspondence to D. Allegrini.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Allegrini, D., Reposi, S., Nocerino, E. et al. Odontogenic orbital cellulitis associated with cavernous sinus thrombosis and pulmonary embolism: a case report. J Med Case Reports 11, 164 (2017).

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: