RESUMEN
RATIONALE: Intracavernous infectious aneurysm (ICIA), represents a rare entity that is always described in the form of case reports in the literature. The coexistence of ICIA and cavernous sinus thrombosis (CST) is extremely rare and poorly understood. PATIENT CONCERNS: A 53-year-old female patient presented to our hospital with headache, nausea and fatigue for 3 weeks. She complained of blurry vision and drooping eyelids before admission. Neurological examination revealed bilateral decreased visual acuity, limitation of extraocular movements and decreased sensation of forehead. Brain magnetic resonance imaging (MRI) showed mixed signal intensities in both cavernous sinuses and expansion of right superior ophthalmic vein, suggesting the formation of CST. One month later, computed tomography angiography (CTA) confirmed a large aneurysm was attached to the left intracavernous carotid artery (ICCA). DIAGNOESE: This patient was diagnosed with ICIA and CST. INTERVENTIONS: She was administered with intravenous meropenem and vancomycin and subcutaneous injection of low molecular heparin for 4 weeks. OUTCOMES: One month later, her extraocular movement had significantly improved, without ptosis and conjunctival congestion. At 1-year follow-up, her ophthalmoplegia fully recovered. Fortunately, such large aneurysm did not rupture in spite of slight broadening. LESSONS: The coexistence of ICIA and CST is extremely rare. Contiguous infection from adjacent tissues is the foremost cause of ICIA. A repeated angiographic examination is recommended under enough anti-infective treatment due to the characteristics of rapid emergence and fast growth of infectious aneurysms.
Asunto(s)
Trombosis del Seno Cavernoso , Humanos , Femenino , Persona de Mediana Edad , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/etiología , Aneurisma Intracraneal/complicaciones , Aneurisma Intracraneal/diagnóstico , Aneurisma Intracraneal/diagnóstico por imagen , Angiografía por Tomografía Computarizada/métodos , Aneurisma Infectado/diagnóstico , Enfermedades de las Arterias Carótidas/complicaciones , Enfermedades de las Arterias Carótidas/diagnósticoRESUMEN
INTRODUCTION: Cavernous sinus thrombosis (CST) is a serious condition that carries with it a high rate of morbidity and mortality. OBJECTIVE: This review highlights the pearls and pitfalls of CST, including presentation, diagnosis, and management in the emergency department (ED) based on current evidence. DISCUSSION: CST is a potentially deadly thrombophlebitic disease involving the cavernous sinuses. The most common underlying etiology is sinusitis or other facial infection several days prior to development of CST, though other causes include maxillofacial trauma or surgery, thrombophilia, dehydration, or medications. Staphylococcus aureus, streptococcal species, oral anaerobic species, and gram-negative bacilli are the most frequent bacterial etiologies. The most prevalent presenting signs and symptoms are fever, headache, and ocular manifestations (chemosis, periorbital edema, ptosis, ophthalmoplegia, vision changes). Cranial nerve (CN) VI is the most commonly affected CN, resulting in lateral rectus palsy. Other CNs that may be affected include III, IV, and V. The disease may also affect the pulmonary and central nervous systems. Laboratory testing typically reveals elevated inflammatory markers, and blood cultures are positive in up to 70% of cases. Computed tomography of the head and orbits with intravenous contrast delayed phase imaging is recommended in the ED setting, though magnetic resonance venography demonstrates the highest sensitivity. Management includes resuscitation, antibiotics, and anticoagulation with specialist consultation. CONCLUSION: An understanding of CST can assist emergency clinicians in diagnosing and managing this potentially deadly disease.
Asunto(s)
Trombosis del Seno Cavernoso , Humanos , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/terapia , Trombosis del Seno Cavernoso/etiología , Servicio de Urgencia en Hospital , Tomografía Computarizada por Rayos X , Prevalencia , Anticoagulantes/uso terapéutico , Antibacterianos/uso terapéuticoRESUMEN
We describe a rare and complex case of septic cavernous sinus thrombosis (SCST) in a 70-year-old patient who initially presented with ocular symptoms that rapidly progressed to severe intracranial vascular complications, including subarachnoid hemorrhage (SAH). Despite the use of broad-spectrum antibiotics and anticoagulants, the patient's condition deteriorated. SCST, often caused by sinus infections, presents a significant diagnostic and therapeutic dilemma, with mortality rates exceeding 20%. This report underscores the diversity of clinical presentations, ranging from mild headaches to severe cranial nerve deficits, that complicate diagnosis and treatment. The inability to detect any aneurysms in our patient using magnetic resonance imaging (MRI) and computed tomography angiography (CTA) may indicate an alternative pathogenesis. This could involve venous hypertension and endothelial hyperpermeability. This case illustrates the need for personalized treatment approaches, as recommended by the European Federation of Neurological Societies, and the importance of a multidisciplinary perspective when managing such intricate neurological conditions. Our findings contribute to the understanding of SCST coexisting with SAH.
Asunto(s)
Trombosis del Seno Cavernoso , Trombosis de los Senos Intracraneales , Hemorragia Subaracnoidea , Humanos , Anciano , Trombosis del Seno Cavernoso/complicaciones , Trombosis del Seno Cavernoso/diagnóstico , Hemorragia Subaracnoidea/complicaciones , Trombosis de los Senos Intracraneales/complicaciones , Trombosis de los Senos Intracraneales/diagnóstico , Trombosis de los Senos Intracraneales/tratamiento farmacológico , Anticoagulantes/uso terapéutico , Imagen por Resonancia Magnética/efectos adversosRESUMEN
Lemierre's syndrome is a triad consisting of oropharyngeal infection, internal jugular vein thrombophlebitis, and systemic embolisation typically involving lung and brain. Orbital involvement in this life-threatening condition is rare but potentially blinding and may be an indicator of intracranial involvement. We describe a case of odontogenic Lemierre's syndrome complicated by extensive orbital and intracranial septic venous thrombosis, with optic and cranial neuropathy resulting in monocular blindness and ophthalmoplegia. A multidisciplinary approach with abscess drainage, antibiotic and antithrombotic therapy, and close radiological monitoring was critical for preserving contralateral vision and neurological function.
Asunto(s)
Trombosis del Seno Cavernoso , Síndrome de Lemierre , Oftalmoplejía , Tromboflebitis , Trombosis de la Vena , Humanos , Síndrome de Lemierre/diagnóstico , Síndrome de Lemierre/diagnóstico por imagen , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/diagnóstico por imagen , Tromboflebitis/complicaciones , Tromboflebitis/diagnóstico por imagen , Tromboflebitis/tratamiento farmacológico , Ceguera/etiología , Oftalmoplejía/diagnóstico , Oftalmoplejía/tratamiento farmacológico , Oftalmoplejía/etiologíaRESUMEN
ABSTRACT Cavernous sinus and superior ophthalmic vein thrombosis is a rare clinical condition, and little described in the literature. The clinical presentation is nonspecific and highly variable, and symptoms may include red eye, ophthalmoplegia, coma, and death. The main etiology results from infection of the paranasal sinuses. The final diagnosis must be made through imaging tests such as magnetic resonance imaging. We describe a case of cavernous sinus and superior ophthalmic vein thrombosis after COVID-19 infection in a 64-year-old patient with persistent ocular hyperemia and pain on eye movement. Ophthalmological examination showed preserved visual acuity, conjunctival hyperemia, dilation of episcleral vessels and retinal vascular tortuosity in the right eye. Magnetic resonance imaging confirmed the diagnosis. The association with the COVID-19 was raised, excluding other infectious causes. Enoxaparin and Warfarin were started with significant improvement in the ocular clinical presentation and maintenance of initial visual acuity after 12 months of follow-up.
RESUMO A trombose de seio cavernoso e veia oftálmica superior é uma condição clínica rara e pouco descrita na literatura. A apresentação clínica é inespecífica e altamente variável. Os sintomas podem incluir olho vermelho, oftalmoplegia, coma e morte. A etiologia principal resulta da infecção dos seios paranasais. O diagnóstico final deve ser efetuado por meio de exames de imagem, como ressonância magnética. Descrevemos um caso de trombose de seio cavernoso e veia oftálmica superior após COVID-19 em paciente de 64 anos e com quadro de hiperemia ocular persistente e dor à movimentação ocular. Ao exame oftalmológico, observou-se acuidade visual preservada, hiperemia conjuntival, dilatação de vasos episclerais e tortuosidade vascular retiniana em olho direito. A ressonância confirmou o diagnóstico. A associação com a COVID-19 foi levantada, excluindo-se demais causas infecciosas. Prescrevemos enoxaparina e varfarina, com melhora do quadro clínico ocular e manutenção da acuidade visual inicial após 12 meses de acompanhamento.
Asunto(s)
Humanos , Femenino , Persona de Mediana Edad , Trombosis de la Vena/etiología , Trombosis del Seno Cavernoso/etiología , COVID-19/complicaciones , Vasos Retinianos/patología , Tonometría Ocular , Warfarina/administración & dosificación , Imagen por Resonancia Magnética , Enoxaparina/administración & dosificación , Conjuntiva/patología , Trombosis de la Vena/diagnóstico , Trombosis de la Vena/tratamiento farmacológico , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/tratamiento farmacológico , Microscopía con Lámpara de Hendidura , SARS-CoV-2 , Anticoagulantes/administración & dosificaciónAsunto(s)
Humanos , Masculino , Preescolar , Sinusitis/complicaciones , Sinusitis/diagnóstico por imagen , Seno Cavernoso/diagnóstico por imagen , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/etiología , Trombosis del Seno Cavernoso/terapia , Streptococcus constellatus/aislamiento & purificación , Tomografía Computarizada por Rayos X , Antiinfecciosos/uso terapéutico , Anticoagulantes/uso terapéuticoRESUMEN
Introdução: A Trombose Séptica do Seio Cavernoso é uma condição rara, de difícil diagnóstico e seu tratamento deve ser incisivo e assertivo. Mais frequentemente a etiologia da trombose é a extensão de processos infecciosos no terço médio da face, como sinusites dos seios paranasais. Objetivo: Esse trabalho tem como objetivo apresentar um relato de caso clínico de um paciente de 26 anos acometido por trombose séptica do seio cavernoso odontogênica. Relato de caso: O paciente foi submetido a duas drenagens cirúrgicas dos sítios infectados, assim como remoção das causas (dois molares superiores), seguidas de antibioticoretapia endovenosa e controles imaginológico e laboratorial. Conclusão: O diagnóstico precoce e etiologicamente correto seguido de um tratamento clínico e cirúrgico emergente e incisivo são fundamentais na resolução favorável da trombose séptica do seio cavernoso e na diminuição de suas sequelas... (AU)
Introduction: Septic Cavernous Sinus Thrombosis is a rare condition, hard to diagnose and its treatment must be incisive and assertive. More often the etiology of thrombosis is the extension of infectious processes in the middle third of the face, such as sinusitis of the paranasal sinuses. Objectives: This paper aims to present a case report of a 26-year-old patient with odontogenic Cavernous Sinus Septic Thrombosis. Case Report: The patient underwent two surgical drainage of the infected sites, as well as removal of the causes (two maxillary molars), followed by intravenous antibiotic therapy and imaging and laboratory controls. Conclusion: Early and etiologically correct diagnosis followed by an emergent and incisive clinical and surgical treatment are fundamental in the favorable resolution of septic cavernous sinus thrombosis and in the reduction of its sequelae... (AU)
Introducción: La Trombosis del Seno Cavernoso Séptico es una condición rara, difícil de diagnosticar y su tratamiento debe ser incisivo y asertivo. Más a menudo, la etiología de la trombosis es la extensión de procesos infecciosos en el tercio medio de la cara, como la sinusitis de los senos paranasales. Objetivos: El presente trabajo tiene como objetivo presentar el reporte de un caso de un paciente de 26 años con Trombosis Séptica del Seno Cavernoso odontogénica. Reporte de caso: El paciente fue sometido a dos drenajes quirúrgicos de los sitios infectados, así como a la extirpación de las causas (dos molares maxilares), seguido de antibioticoterapia endovenosa y controles de imagen y laboratorio. Conclusión: El diagnóstico precoz y etiologicamente correcto seguido de un tratamiento clínico y quirúrgico emergente e incisivo son fundamentales en la resolución favorable de la trombosis del seno cavernoso séptico y en la reducción de sus secuelas... (AU)
Asunto(s)
Humanos , Masculino , Adulto , Senos Paranasales , Síndrome del Nevo Basocelular , Seno Cavernoso/patología , Drenaje , Trombosis del Seno Cavernoso/diagnóstico , Cara , MaxilaresRESUMEN
RATIONALE: Septic cavernous sinus thrombosis (SCST) is a rare but life-threatening condition that commonly arises from infections, including paranasal sinusitis, otitis media, and skin infection. Meanwhile, head trauma as a predisposing factor of SCST has been scarcely reported. We report a case of SCST complicated by meningitis after minor head trauma, even in the absence of identifiable fractures. PATIENT CONCERNS AND DIAGNOSIS: A 77-year-old female presented with diplopia combined with ocular pain and headache lasting a week. She had a recent blunt head trauma 2 weeks before the diplopia onset. The trauma was not accompanied by identifiable skull fractures, bleeding, or loss of consciousness. Neurological examination revealed incomplete ptosis, eyelid swelling, and medial and vertical gaze limitations of both eyes. Gadolinium-enhanced brain magnetic resonance imaging demonstrated multifocal thrombotic filling defects, including those of the cavernous sinus, sinusitis involving the sphenoid and ethmoid sinuses, and otomastoiditis. The cerebrospinal fluid assay result was compatible with bacterial meningitis. A tentative diagnosis of SCST complicated by bacterial meningitis and multifocal cerebral venous thrombosis was made based on clinical, laboratory, and neuroradiologic findings. INTERVENTION: Intravenous triple antibiotic therapy (vancomycin, ceftriaxone, and ampicillin) for 2 weeks combined with methylprednisolone (1âg/d for 5 days) was administered. Despite the initial treatment, carotid-cavernous fistula was newly developed during hospitalization. Therefore, coil embolization was performed successfully for the treatment of carotid-cavernous fistula. OUTCOMES: The symptoms of the patient including diplopia gradually improved during the 8-month follow-up period. LESSONS: Minor head trauma is a rare but possible cause of SCST. Early recognition and prompt treatment are essential for improving outcomes. Moreover, close observation is warranted, even if apparent serious complications were absent during initial evaluations in minor head trauma.
Asunto(s)
Fístula del Seno Cavernoso de la Carótida , Trombosis del Seno Cavernoso , Traumatismos Craneocerebrales , Trombosis de los Senos Intracraneales , Sinusitis , Anciano , Fístula del Seno Cavernoso de la Carótida/complicaciones , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/etiología , Trombosis del Seno Cavernoso/terapia , Traumatismos Craneocerebrales/complicaciones , Diplopía/complicaciones , Femenino , Humanos , Trombosis de los Senos Intracraneales/complicaciones , Sinusitis/complicacionesAsunto(s)
Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/cirugía , Fusobacterium necrophorum/aislamiento & purificación , Celulitis Orbitaria/diagnóstico , Celulitis Orbitaria/cirugía , Antibacterianos/uso terapéutico , Anticoagulantes/uso terapéutico , Trombosis del Seno Cavernoso/tratamiento farmacológico , Trombosis del Seno Cavernoso/patología , Niño , Exoftalmia/etiología , Fiebre/etiología , Fusobacterium necrophorum/efectos de los fármacos , Hemodinámica , Humanos , Masculino , Neuroimagen , Celulitis Orbitaria/tratamiento farmacológico , Celulitis Orbitaria/patología , Penicilinas/uso terapéutico , Tomografía Computarizada por Rayos X , Resultado del TratamientoAsunto(s)
Absceso Encefálico/diagnóstico , Trombosis del Seno Cavernoso/diagnóstico , Sinusitis del Esfenoides/diagnóstico , Adulto , Anticoagulantes/uso terapéutico , Absceso Encefálico/complicaciones , Absceso Encefálico/etiología , Trombosis del Seno Cavernoso/tratamiento farmacológico , Trombosis del Seno Cavernoso/etiología , Humanos , Imagen por Resonancia Magnética , Masculino , Sinusitis del Esfenoides/complicacionesRESUMEN
We report an unusual case of acquired oculomotor synkinesis as a sequela of cavernous sinus thrombosis in a child. A 4-year-old male child presented to our emergency services with sudden onset periorbital swelling with complete ptosis of the left upper eyelid. This was preceded by a febrile episode and a furuncle at the tip of the nose. Computerised axial tomography of the orbit revealed orbital cellulitis in the left eye. The child was started on systemic antibiotics followed by a short course of systemic steroids. MRI of the brain with contrast revealed left cavernous sinus and superior ophthalmic vein thrombosis. Following administration of systemic anticoagulants and antibiotics, the ocular motility and ptosis improved remarkably. However, 6 months post-treatment, the child developed signs of aberrant regeneration of the third cranial nerve (oculomotor synkinesis).
Asunto(s)
Trombosis del Seno Cavernoso , Seno Cavernoso , Celulitis Orbitaria , Sincinesia , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/diagnóstico por imagen , Niño , Preescolar , Humanos , Imagen por Resonancia Magnética , MasculinoAsunto(s)
Trombosis del Seno Cavernoso/diagnóstico , Sinusitis del Esfenoides/complicaciones , Adolescente , Trombosis del Seno Cavernoso/diagnóstico por imagen , Trombosis del Seno Cavernoso/patología , Humanos , Angiografía por Resonancia Magnética , Masculino , Sinusitis del Esfenoides/etiología , Sinusitis del Esfenoides/cirugíaRESUMEN
Septic cavernous sinus thrombosis (SCST) is a rare, yet severe, process typically arising from infections of the paranasal sinuses (predominately ethmoid and/or sphenoid sinusitis) and less commonly, otogenic, odontogenic, and pharyngeal sources. Clinical symptoms of SCST arise from obstruction of venous drainage from the orbit and compression of the cranial nerves within the cavernous sinus. In the preantibiotic era SCST was considered universally fatal (80-100%); however, with the introduction of antibiotics the overall incidence, morbidity, and mortality of SCST have greatly declined. In spite of dramatic improvements, morbidity and mortality remain high, with the majority of patients experiencing neurological sequalae, highlighting the severity of the disease and the need for prompt recognition, diagnosis, and treatment. Here we review of the literature on SCST with a focus on the current recommendations and recent evidence for diagnostic and medical management of this condition.
Asunto(s)
Trombosis del Seno Cavernoso , Seno Cavernoso , Trombosis de los Senos Intracraneales , Antibacterianos/uso terapéutico , Trombosis del Seno Cavernoso/diagnóstico , Trombosis del Seno Cavernoso/etiología , Trombosis del Seno Cavernoso/terapia , Humanos , Trombosis de los Senos Intracraneales/complicaciones , Trombosis de los Senos Intracraneales/diagnóstico , Trombosis de los Senos Intracraneales/terapiaRESUMEN
Cavernous sinus thrombosis is a rare but fatal condition arising due to various infectious and noninfectious causes. Although its incidence is very low in the setting of head and neck surgery, including radical neck dissection, a high index of suspicion with prompt treatment is the key to a successful outcome. We report a case of a 50-year-old woman with a chondrosarcoma of left lower alveolobuccal complex who underwent en bloc tumour resection with infratemporal fossa clearance and left modified radical neck dissection. Subsequently, she developed cavernous sinus thrombosis, which was successfully managed with a multidisciplinary approach. This case highlights the importance of high clinical suspicion in the postoperative setting to diagnose this potentially lethal complication.
Asunto(s)
Trombosis del Seno Cavernoso/diagnóstico , Condrosarcoma/complicaciones , Neoplasias de Cabeza y Cuello/complicaciones , Osteotomía Mandibular , Mioepitelioma , Disección del Cuello/efectos adversos , Femenino , Humanos , Persona de Mediana Edad , Complicaciones Posoperatorias , Tomografía Computarizada por Rayos XRESUMEN
A 42-year-old woman presented with fever, left ear pain, restricted mouth opening, difficulty in swallowing and inability to open her left eyelid for a period of 10 days. She was treated with antibiotics for the same at a local medical facility; however, a sudden decrease in her left eye vision prompted her to visit our tertiary centre. Her history was insignificant except for having multiple left ear syringing for an insect removal 10 days before onset of her current symptoms. On examination, she had ptosis of the left eye with chemosis, dilated pupil with only perception of light and restricted ocular mobility. Oral examination revealed trismus and bulge in the left peritonsillar region. Left ear examination revealed a large central perforation with mucopurulent discharge. CT of the neck with contrast demonstrated a collection in the left peritonsillar space with left internal carotid artery thrombosis. MRI of the brain with gadolinium revealed left cavernous sinus thrombosis with acute infarcts in the left frontal lobe. An emergency incision and drainage of the left peritonsillar abscess was performed. Culture grew broad aseptate fungal hyphae. Despite starting on antifungal therapy, she succumbed to her illness.
Asunto(s)
Trombosis del Seno Cavernoso/diagnóstico , Cuerpos Extraños en el Ojo/complicaciones , Mucormicosis/diagnóstico , Osteomielitis/diagnóstico , Base del Cráneo/microbiología , Adulto , Anfotericina B/uso terapéutico , Animales , Seno Cavernoso/diagnóstico por imagen , Trombosis del Seno Cavernoso/tratamiento farmacológico , Trombosis del Seno Cavernoso/etiología , Escarabajos/microbiología , Drenaje , Quimioterapia Combinada , Enoxaparina/uso terapéutico , Cuerpos Extraños en el Ojo/diagnóstico , Cuerpos Extraños en el Ojo/microbiología , Cuerpos Extraños en el Ojo/terapia , Resultado Fatal , Femenino , Humanos , Hifa/aislamiento & purificación , Imagen por Resonancia Magnética , Meropenem/uso terapéutico , Mucorales/aislamiento & purificación , Mucormicosis/microbiología , Mucormicosis/terapia , Osteomielitis/microbiología , Osteomielitis/terapia , Base del Cráneo/diagnóstico por imagen , Base del Cráneo/patología , Base del Cráneo/cirugía , Vancomicina/uso terapéuticoRESUMEN
Cavernous sinus thrombosis (CST) is a rare and potentially fatal complication of acute sinusitis. Timely diagnosis and management is, therefore, essential in preventing death and neurological disability. Here, we describe the case of a paediatric patient with bilateral CST secondary to acute unilateral pansinusitis that presented with rapidly progressing bilateral periorbital oedema. Initial imaging was negative. This case serves to emphasise the importance of maintaining a high index of suspicion when managing paediatric patients with suspected CST with persistent symptoms. Expeditious investigation and management of our patient in this case resulted in a positive outcome, with resolution of symptoms and no residual neurological deficit.
Asunto(s)
Trombosis del Seno Cavernoso/diagnóstico , Seno Cavernoso/microbiología , Cefalea/etiología , Sinusitis/diagnóstico , Infecciones Estreptocócicas/diagnóstico , Administración Intravenosa , Adolescente , Antibacterianos/administración & dosificación , Anticoagulantes/administración & dosificación , Seno Cavernoso/diagnóstico por imagen , Seno Cavernoso/patología , Seno Cavernoso/cirugía , Trombosis del Seno Cavernoso/líquido cefalorraquídeo , Trombosis del Seno Cavernoso/tratamiento farmacológico , Trombosis del Seno Cavernoso/etiología , Diagnóstico Diferencial , Quimioterapia Combinada/métodos , Endoscopía , Cefalea/líquido cefalorraquídeo , Cefalea/terapia , Humanos , Angiografía por Resonancia Magnética , Masculino , Sinusitis/complicaciones , Sinusitis/microbiología , Sinusitis/terapia , Infecciones Estreptocócicas/complicaciones , Infecciones Estreptocócicas/microbiología , Infecciones Estreptocócicas/terapia , Streptococcus intermedius/aislamiento & purificación , Tomografía Computarizada por Rayos X , Resultado del TratamientoRESUMEN
A woman in her 60s with multiple sclerosis (MS) presented with right-sided ptosis, right sixth nerve palsy, right facial paraesthesia and signs of sepsis. She had a recent diagnosis of a dental abscess. Investigations revealed a right submasseter abscess leading to bacterial meningitis (Streptococcus intermedius) and a cavernous sinus thrombosis. She was managed in intensive care and underwent surgical drainage of the abscess. Anticoagulation for 6 months was planned. Cavernous sinus thrombosis is a very rare complication of a dental abscess, and even less frequently associated with submasseter abscesses. The case was complicated by a history of MS, to which the patient's symptoms and signs were initially attributed to. This case highlights the diagnostic pitfalls, and aims to enhance learning around similar cases. To the best of our knowledge, this is the first case report of a masseter/submasseter abscess leading to cavernous sinus thrombosis.