ACOM: Acute middle ear-mastoid (ME-M) infection with progressive bony resorption and demineralization due to intramastoid empyema ± osteomyelitis
ACOM + abscess: Coalescent otomastoiditis with resultant intracranial or extracranial abscess
AOM: Acute infection in ME-M without destruction of mastoid septations or cortex
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Saat R et al: Detection of coalescent acute mastoiditis on MRI in comparison with CT. Clin Neuroradiol. ePub, 2020
Saat R et al: Comparison of MR imaging findings in paediatric and adult patients with acute mastoiditis and incidental intramastoid bright signal on T2-weighted images. Eur Radiol. 26(8):2632-9, 2016
Saat R et al: MR imaging features of acute mastoiditis and their clinical relevance. AJNR Am J Neuroradiol. 36(2):361-7, 2015
Funamura JL et al: Otogenic lateral sinus thrombosis: case series and controversies. Int J Pediatr Otorhinolaryngol. 78(5):866-70, 2014
Psarommatis IM et al: Algorithmic management of pediatric acute mastoiditis. Int J Pediatr Otorhinolaryngol. 76(6):791-6, 2012
Osborn AJ et al: Decisions regarding intracranial complications from acute mastoiditis in children. Curr Opin Otolaryngol Head Neck Surg. 19(6):478-85, 2011
Zevallos JP et al: Advanced pediatric mastoiditis with and without intracranial complications. Laryngoscope. 119(8):1610-5, 2009
Park H et al: Surgical management of acute mastoiditis with epidural abscess. Acta Otolaryngol. 126(7):782-4, 2006
Taylor MF et al: Indications for mastoidectomy in acute mastoiditis in children. Ann Otol Rhinol Laryngol. 113(1):69-72, 2004
Khan I et al: Mastoiditis in children. J Laryngol Otol. 117(3):177-81, 2003
Migirov L: Computed tomographic versus surgical findings in complicated acute otomastoiditis. Ann Otol Rhinol Laryngol. 112(8):675-7, 2003
Vazquez E et al: Imaging of complications of acute mastoiditis in children. Radiographics. 23(2):359-72, 2003
Bauer PW et al: Mastoid subperiosteal abscess management in children. Int J Pediatr Otorhinolaryngol. 63(3):185-8, 2002
Tarantino V et al: Acute mastoiditis: a 10 year retrospective study. Int J Pediatr Otorhinolaryngol. 66(2):143-8, 2002
Dobben GD et al: Otogenic intracranial inflammations: role of magnetic resonance imaging. Top Magn Reson Imaging. 11(2):76-86, 2000
Dhooge IJ et al: Value of computed tomography of the temporal bone in acute otomastoiditis. Rev Laryngol Otol Rhinol (Bord). 119(2):91-4, 1998
Spiegel JH et al: Contemporary presentation and management of a spectrum of mastoid abscesses. Laryngoscope. 108(6):822-8, 1998
Mafee MF et al: Acute otomastoiditis and its complications: role of CT. Radiology. 155(2):391-7, 1985
Related Anatomy
Loading...
Related Differential Diagnoses
Loading...
References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
TERMINOLOGY
Abbreviations
Acute coalescent otomastoiditis (ACOM)
Acute otomastoiditis (AOM)
Synonyms
Coalescent otomastoiditis with abscess
Definitions
ACOM: Acute middle ear-mastoid (ME-M) infection with progressive bony resorption and demineralization due to intramastoid empyema ± osteomyelitis
ACOM + abscess: Coalescent otomastoiditis with resultant intracranial or extracranial abscess
AOM: Acute infection in ME-M without destruction of mastoid septations or cortex
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Saat R et al: Detection of coalescent acute mastoiditis on MRI in comparison with CT. Clin Neuroradiol. ePub, 2020
Saat R et al: Comparison of MR imaging findings in paediatric and adult patients with acute mastoiditis and incidental intramastoid bright signal on T2-weighted images. Eur Radiol. 26(8):2632-9, 2016
Saat R et al: MR imaging features of acute mastoiditis and their clinical relevance. AJNR Am J Neuroradiol. 36(2):361-7, 2015
Funamura JL et al: Otogenic lateral sinus thrombosis: case series and controversies. Int J Pediatr Otorhinolaryngol. 78(5):866-70, 2014
Psarommatis IM et al: Algorithmic management of pediatric acute mastoiditis. Int J Pediatr Otorhinolaryngol. 76(6):791-6, 2012
Osborn AJ et al: Decisions regarding intracranial complications from acute mastoiditis in children. Curr Opin Otolaryngol Head Neck Surg. 19(6):478-85, 2011
Zevallos JP et al: Advanced pediatric mastoiditis with and without intracranial complications. Laryngoscope. 119(8):1610-5, 2009
Park H et al: Surgical management of acute mastoiditis with epidural abscess. Acta Otolaryngol. 126(7):782-4, 2006
Taylor MF et al: Indications for mastoidectomy in acute mastoiditis in children. Ann Otol Rhinol Laryngol. 113(1):69-72, 2004
Khan I et al: Mastoiditis in children. J Laryngol Otol. 117(3):177-81, 2003
Migirov L: Computed tomographic versus surgical findings in complicated acute otomastoiditis. Ann Otol Rhinol Laryngol. 112(8):675-7, 2003
Vazquez E et al: Imaging of complications of acute mastoiditis in children. Radiographics. 23(2):359-72, 2003
Bauer PW et al: Mastoid subperiosteal abscess management in children. Int J Pediatr Otorhinolaryngol. 63(3):185-8, 2002
Tarantino V et al: Acute mastoiditis: a 10 year retrospective study. Int J Pediatr Otorhinolaryngol. 66(2):143-8, 2002
Dobben GD et al: Otogenic intracranial inflammations: role of magnetic resonance imaging. Top Magn Reson Imaging. 11(2):76-86, 2000
Dhooge IJ et al: Value of computed tomography of the temporal bone in acute otomastoiditis. Rev Laryngol Otol Rhinol (Bord). 119(2):91-4, 1998
Spiegel JH et al: Contemporary presentation and management of a spectrum of mastoid abscesses. Laryngoscope. 108(6):822-8, 1998
Mafee MF et al: Acute otomastoiditis and its complications: role of CT. Radiology. 155(2):391-7, 1985
STATdx includes over 200,000 searchable images, including x-ray, CT, MR, and ultrasound images. To access all images, please log in or subscribe.