Positron emission tomography in the evaluation of pulmonary nodules among patients living in a coccidioidal endemic region

Nathaniel Reyes, Oluwole O. Onadeko, Maria Del Carmen Luraschi-Monjagatta, Kenneth S Knox, Margaret A. Rennels, Travis Kent Walsh, Neil M. Ampel

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Background: Within a coccidioidal endemic region, pulmonary nodules due to coccidioidomycosis are common. Uptake of 18fluorodeoxyglucose ( 18FDG) by positron emission tomography with computed axial tomography (PET/CT) has been used to assess whether pulmonary nodules are malignant but inflammatory lesions can be positive. The purpose of this study was to compare by PET/CT the 18FDG uptake in pulmonary nodules likely due to coccidioidomycosis to that of nodules shown to be malignant among patients living in a coccidioidal endemic region. Methods: We retrospectively reviewed patients who underwent a PET/CT at the Southern Arizona Veterans Affairs Health Care System between January 2008 and March 2012 who were subsequently found on biopsy to have pulmonary nodules that were coccidioidal or granulomatous or were due to malignancy. Results: Among 245 diagnostic biopsies where the subject had a previous PET/CT, 15 (6.1 %) were either coccidioidal (n = 12) or granulomatous without an identified organism (n = 3). The median maximum standard unit of uptake (SUVmax) on PET/CT of coccidioidal or granulomatous lesions was 2.0 compared to 9.8 for malignant lesions (P < 0.001). The maximum diameter of the coccidioidal or granulomatous nodules was 2.1 cm compared to 3.0 cm for the malignant lesions (P = 0.009). On multivariable analysis, an elevated SUVmax was the only distinguishing feature between the malignant and the granulomatous lesions (OR 1.28, 95 % CI 1.05-1.55; P = 0.013). Conclusions: Coccidioidal pulmonary nodules take up significantly less 18FDG than those due to malignancies, but there is considerable overlap between granulomatous and malignant lesions at lower SUVmax.

Original languageEnglish (US)
Pages (from-to)589-593
Number of pages5
JournalLung
Volume192
Issue number4
DOIs
StatePublished - 2014

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Positron-Emission Tomography
Tomography
Lung
Coccidioidomycosis
Veterans Health
Biopsy
Neoplasms
Delivery of Health Care

Keywords

  • Coccidioidomycosis
  • Computed tomography
  • Granulomata
  • Malignancy
  • Positron emission tomography
  • Pulmonary nodules

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Medicine(all)

Cite this

Positron emission tomography in the evaluation of pulmonary nodules among patients living in a coccidioidal endemic region. / Reyes, Nathaniel; Onadeko, Oluwole O.; Luraschi-Monjagatta, Maria Del Carmen; Knox, Kenneth S; Rennels, Margaret A.; Walsh, Travis Kent; Ampel, Neil M.

In: Lung, Vol. 192, No. 4, 2014, p. 589-593.

Research output: Contribution to journalArticle

Reyes, Nathaniel ; Onadeko, Oluwole O. ; Luraschi-Monjagatta, Maria Del Carmen ; Knox, Kenneth S ; Rennels, Margaret A. ; Walsh, Travis Kent ; Ampel, Neil M. / Positron emission tomography in the evaluation of pulmonary nodules among patients living in a coccidioidal endemic region. In: Lung. 2014 ; Vol. 192, No. 4. pp. 589-593.
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abstract = "Background: Within a coccidioidal endemic region, pulmonary nodules due to coccidioidomycosis are common. Uptake of 18fluorodeoxyglucose ( 18FDG) by positron emission tomography with computed axial tomography (PET/CT) has been used to assess whether pulmonary nodules are malignant but inflammatory lesions can be positive. The purpose of this study was to compare by PET/CT the 18FDG uptake in pulmonary nodules likely due to coccidioidomycosis to that of nodules shown to be malignant among patients living in a coccidioidal endemic region. Methods: We retrospectively reviewed patients who underwent a PET/CT at the Southern Arizona Veterans Affairs Health Care System between January 2008 and March 2012 who were subsequently found on biopsy to have pulmonary nodules that were coccidioidal or granulomatous or were due to malignancy. Results: Among 245 diagnostic biopsies where the subject had a previous PET/CT, 15 (6.1 {\%}) were either coccidioidal (n = 12) or granulomatous without an identified organism (n = 3). The median maximum standard unit of uptake (SUVmax) on PET/CT of coccidioidal or granulomatous lesions was 2.0 compared to 9.8 for malignant lesions (P < 0.001). The maximum diameter of the coccidioidal or granulomatous nodules was 2.1 cm compared to 3.0 cm for the malignant lesions (P = 0.009). On multivariable analysis, an elevated SUVmax was the only distinguishing feature between the malignant and the granulomatous lesions (OR 1.28, 95 {\%} CI 1.05-1.55; P = 0.013). Conclusions: Coccidioidal pulmonary nodules take up significantly less 18FDG than those due to malignancies, but there is considerable overlap between granulomatous and malignant lesions at lower SUVmax.",
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T1 - Positron emission tomography in the evaluation of pulmonary nodules among patients living in a coccidioidal endemic region

AU - Reyes, Nathaniel

AU - Onadeko, Oluwole O.

AU - Luraschi-Monjagatta, Maria Del Carmen

AU - Knox, Kenneth S

AU - Rennels, Margaret A.

AU - Walsh, Travis Kent

AU - Ampel, Neil M.

PY - 2014

Y1 - 2014

N2 - Background: Within a coccidioidal endemic region, pulmonary nodules due to coccidioidomycosis are common. Uptake of 18fluorodeoxyglucose ( 18FDG) by positron emission tomography with computed axial tomography (PET/CT) has been used to assess whether pulmonary nodules are malignant but inflammatory lesions can be positive. The purpose of this study was to compare by PET/CT the 18FDG uptake in pulmonary nodules likely due to coccidioidomycosis to that of nodules shown to be malignant among patients living in a coccidioidal endemic region. Methods: We retrospectively reviewed patients who underwent a PET/CT at the Southern Arizona Veterans Affairs Health Care System between January 2008 and March 2012 who were subsequently found on biopsy to have pulmonary nodules that were coccidioidal or granulomatous or were due to malignancy. Results: Among 245 diagnostic biopsies where the subject had a previous PET/CT, 15 (6.1 %) were either coccidioidal (n = 12) or granulomatous without an identified organism (n = 3). The median maximum standard unit of uptake (SUVmax) on PET/CT of coccidioidal or granulomatous lesions was 2.0 compared to 9.8 for malignant lesions (P < 0.001). The maximum diameter of the coccidioidal or granulomatous nodules was 2.1 cm compared to 3.0 cm for the malignant lesions (P = 0.009). On multivariable analysis, an elevated SUVmax was the only distinguishing feature between the malignant and the granulomatous lesions (OR 1.28, 95 % CI 1.05-1.55; P = 0.013). Conclusions: Coccidioidal pulmonary nodules take up significantly less 18FDG than those due to malignancies, but there is considerable overlap between granulomatous and malignant lesions at lower SUVmax.

AB - Background: Within a coccidioidal endemic region, pulmonary nodules due to coccidioidomycosis are common. Uptake of 18fluorodeoxyglucose ( 18FDG) by positron emission tomography with computed axial tomography (PET/CT) has been used to assess whether pulmonary nodules are malignant but inflammatory lesions can be positive. The purpose of this study was to compare by PET/CT the 18FDG uptake in pulmonary nodules likely due to coccidioidomycosis to that of nodules shown to be malignant among patients living in a coccidioidal endemic region. Methods: We retrospectively reviewed patients who underwent a PET/CT at the Southern Arizona Veterans Affairs Health Care System between January 2008 and March 2012 who were subsequently found on biopsy to have pulmonary nodules that were coccidioidal or granulomatous or were due to malignancy. Results: Among 245 diagnostic biopsies where the subject had a previous PET/CT, 15 (6.1 %) were either coccidioidal (n = 12) or granulomatous without an identified organism (n = 3). The median maximum standard unit of uptake (SUVmax) on PET/CT of coccidioidal or granulomatous lesions was 2.0 compared to 9.8 for malignant lesions (P < 0.001). The maximum diameter of the coccidioidal or granulomatous nodules was 2.1 cm compared to 3.0 cm for the malignant lesions (P = 0.009). On multivariable analysis, an elevated SUVmax was the only distinguishing feature between the malignant and the granulomatous lesions (OR 1.28, 95 % CI 1.05-1.55; P = 0.013). Conclusions: Coccidioidal pulmonary nodules take up significantly less 18FDG than those due to malignancies, but there is considerable overlap between granulomatous and malignant lesions at lower SUVmax.

KW - Coccidioidomycosis

KW - Computed tomography

KW - Granulomata

KW - Malignancy

KW - Positron emission tomography

KW - Pulmonary nodules

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