Inhalational Talc Pneumoconiosis: Radiographic and CT Findings in 14 Patients
Masanori Akira1,
Takenori Kozuka1,
Satoru Yamamoto2,
Mitsunori Sakatani3 and
Kenji Morinaga4
1 Department of Radiology, Kinki-Chuo Chest Medical Center, 1180 Nagasone-cho,
Sakai City, Osaka 591-8555, Japan.
2 Department of Pathology, Kinki-Chuo Chest Medical Center, Osaka 591-8555,
Japan.
3 Department of Internal Medicine, Kinki-Chuo Chest Medical Center, Osaka
591-8555, Japan.
4 Department of Environmental Health, National Institute of Industrial Health,
Kawasaki 214-8585, Japan.
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Fig. 1A —61-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 20 years. Initial chest radiograph shows fine nodular
opacities diffusely distributed throughout both lungs.
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Fig. 1B —61-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 20 years. Chest radiograph obtained at 15-year follow-up
examination shows fine nodules and large opacity in upper zone of right lung
and middle zone of left lung.
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Fig. 1C —61-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 20 years. Axial supine thin-section CT scan shows
well-defined (arrowheads) and ill-defined (arrows) small
nodular opacities mainly distributed in centrilobular location.
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Fig. 1D —61-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 20 years. Axial supine thin-section CT scan obtained at
mediastinal settings shows large opacity and lymph nodes containing
high-attenuation material.
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Fig. 2B —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. Chest radiograph obtained at 13-year follow-up
examination shows large opacities associated with bilateral superior
retraction of hila.
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Fig. 2D —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. In vitro low-kilovoltage radiograph of inflated
and fixed lung. Crescent-shaped large opacity and small nodular opacities are
evident.
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Fig. 2E —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. In vitro thin-section CT scan of inflated and
fixed lung. Crescent-shaped large opacity is attached to pleural surface.
Subpleural line (arrows) is evident.
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Fig. 2F —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. Photograph of histologic section through
crescentic large opacity shows diffuse fibrosis and proliferation of
dust-laden macrophages and multinucleated giant cells (arrows). (H
and E, x4)
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Fig. 2G —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. Photomicrograph of biopsy specimen examined under
polarized light shows fibrosis contains large accumulations of strongly
birefringent dust particles.
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Fig. 2H —57-year-old man with inhalational talc pneumoconiosis employed in
talc industry for 14 years. Histologic section from area of subpleural line
shows peribronchiolar fibrosis joined by collapse and fibrosis of alveoli
along thickened pleura (arrows). (H and E, x1.6)
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Copyright © 2007 by the American Roentgen Ray Society.
