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Metal-Working Fluids Exposure and a Rare Frontoethmoid Lesion
Shayan Shahidi1, Abdul Nassimizadeh1, Ann Sandison2
1University Hospital Birmingham, Birmingham B15 2TH, UK.
Case Reports in Otolaryngology
|September 10, 2020
Summary
A metalworker developed a rare nasal mass from inhaling "Suds oil," a cutting fluid. This case highlights a novel occupational risk for sinonasal lesions, emphasizing the need for awareness among clinicians and industrial hygienists.
Area of Science:
- Otolaryngology
- Occupational Medicine
- Pathology
Background:
- Sinonasal lesions are often associated with known occupational inhalant exposures.
- Diagnosing unusual nasal masses can be clinically and histologically challenging.
Observation:
- A middle-aged metalworker presented with unilateral nasal obstruction due to a mass in the right middle meatus.
- Surgical excision revealed a granulomatous lesion, posing a diagnostic dilemma.
Findings:
- Clinicopathological correlation and expert consultation led to a diagnosis of a pseudotumor.
- The lesion was linked to occupational exposure to water-soluble cutting oils, termed "Suds oil".
Implications:
- This report describes the first known association between "Suds oil" inhalation and sinonasal pseudotumor formation.
- It expands the spectrum of occupational sinonasal diseases and underscores the importance of considering workplace exposures in differential diagnoses.

