Exogenous Lipoid Pneumonia in Laryngectomy Patients: Radiological Findings

Latorre, Raquel García; Díaz, Ricardo Rodríguez; Barreto, Deisy Barrios; Carbonero, Ana Ayala; Gómez-Muriel, María Isabel García; Sarasúa, Luis Gorospe

doi:10.1016/j.arbr.2015.04.025

Archivos de Bronconeumología (English Edition)

2015

DOI: 10.1016/j.arbr.2015.04.025

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Exogenous Lipoid Pneumonia in Laryngectomy Patients: Radiological Findings

Raquel García Latorre

Ricardo Rodríguez Díaz

Deisy Barrios Barreto

et al.

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Cited by 4 publications

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False positive 18FDG PET-CT results due to exogenous lipoid pneumonia secondary to oily drug inhalation

Chardin¹,

Nivaggioni²,

Viau³

et al. 2017

Medicine

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Rationale:Exogenous lipoid pneumonia is a rare condition due to abnormal presence of oily substances in the lungs. It is a rarely known cause for false positive 18FDG PET-CT results and can sometimes lead to invasive investigations. Searching and finding the source of the oily substance is one of the keys to the diagnosis. Inhalation of oily drugs during snorting has rarely been described.Patient concerns:A patient with well controlled HIV infection was referred for an 18FDG PET-CT to assess extension of Kaposi's disease, recently removed from his right foot. The patient had no particular symptoms.Diagnoses:Abnormal uptake of 18FDG was found in a suspicious lung nodule. An experienced radiologist thought the nodule was due to lipoid pneumonia.Interventions:Bronchoalveolar lavage fluid did not contain lipid-laden macrophages but bronchoscopy showed violet lesions resembling Kaposi's disease lesions. Lobectomy was performed after a multidisciplinary discussion.Outcomes:Anatomopathological analysis revealed the nodule was due to lipoid pneumonia. The patient's quality of life did not diminish after the operation and he is still in good health. The source of the oily substance causing lipoid pneumonia was found after the surgery: the patient used to snort oily drugs.Lessons:The presence of a suspicious lung nodule possibly due to lipoid pneumonia in a patient with known Kaposi's disease was difficult to untangle and lead to invasive surgery. It is possible that if a source of exogenous lipoid pneumonia had been found beforehand, surgery could have been prevented.

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False positive 18FDG PET-CT results due to exogenous lipoid pneumonia secondary to oily drug inhalation

Chardin¹,

Nivaggioni²,

Viau³

et al. 2017

Medicine

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Teppanyaki/Hibachi Pneumonitis: An Exotic Cause of Exogenous Lipoid Pneumonia

Rahaghi

Varasteh

Memarpour

et al. 2016

Case Reports in Pulmonology

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Exogenous lipoid pneumonia (ELP) is a rare type of inflammatory lung disease caused by aspiration and/or inhalation of fatty substances and characterized by a chronic foreign body-type reaction to intra-alveolar lipid deposits. The usual clinical presentation occurs with insidious onset of nonspecific respiratory symptoms and radiographic findings that can mimic other pulmonary diseases. Diagnosis of ELP is often missed or delayed as it requires a high index of suspicion and familiarity with the constellation of appropriate history and radiologic and pathologic features. We herein report a case of occupational exposure to tabletop “Teppanyaki” entertainment cooking as a cause of ELP, confirmed by surgical lung biopsies in a 63-year-old Asian woman who worked as a Hibachi-Teppanyaki chef for 25 years.

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Investigation of rare chronic lipoid pneumonia associated with occupational exposure to paraffin aerosol

Han

Liu

et al. 2016

Journal of Occupational Health

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Objectives: Occupational exposure to paraffin is an infrequent cause of lipoid pneumonia (LP) and related data are scare. We investigated the possible relationship between three rare cases of chronic LP and occupational exposure to paraffin aerosol in an iron foundry. Methods: The three cases of LP and their workplaces were investigated using data from field investigations, air monitoring, pulmonary radiological examinations, cell staining, and lung biopsies. Results: The patients had long-term occupational exposure to paraffin. X-ray diffraction testing revealed that the raw material from the workshop was paraffin crystal. The air concentrations of paraffin aerosol in workplaces were significantly higher than outdoor background levels. Small diffuse and miliary shadows with unclear edges were observed throughout the whole lungs via radiography. Computed tomography revealed diffuse punctate nodules and a high density of stripe-like shadows in both lungs (ground-glass opacity in a lower lobe, and a mass-like lesion and high translucent area near the bottom of the lung). Lipid-laden macrophages were found in the sputum and bronchial lavage. A broadened alveolar septum and local focal fibrosis were also discovered via lung biopsy. The inflammatory reaction in the lung tissues appeared to resolve over time. Conclusions: These three rare cases of chronic LP in workers during molding and repair processes were associated with occupational paraffin aerosol exposure. Therefore, primary prevention is essential for molding or repairing workers in the iron foundry, and a differential diagnosis of occupational chronic LP (vs. pneumoconiosis) should be considered when treating these workers.

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Exogenous Lipoid Pneumonia in Laryngectomy Patients: Radiological Findings

Cited by 4 publications

References 9 publications

False positive 18FDG PET-CT results due to exogenous lipoid pneumonia secondary to oily drug inhalation

False positive 18FDG PET-CT results due to exogenous lipoid pneumonia secondary to oily drug inhalation

Teppanyaki/Hibachi Pneumonitis: An Exotic Cause of Exogenous Lipoid Pneumonia

Investigation of rare chronic lipoid pneumonia associated with occupational exposure to paraffin aerosol

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