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DOI: 10.1148/rg.252045037
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Imaging Evaluation of Pulmonary and Abdominal Complications Following Hematopoietic Stem Cell Transplantation1

David L. Coy, MD, PhD, Amaya Ormazabal, MD, J. David Godwin, MD and Tasneem Lalani, MD, MS

1 From the Department of Radiology, University of Washington, RR 215 Health Sciences Building, Box 357115, 1959 NE Pacific, Seattle, WA 98195-7115. Presented as an education exhibit at the 2003 RSNA Scientific Assembly. Received March 15, 2004; revision requested June 16 and received July 20; accepted July 22. All authors have no financial relationships to disclose.


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Figure 1a.  Pulmonary aspergillosis following hematopoietic stem cell transplantation. (a, b) CT scans obtained in two different patients show solitary nodules, with the nodule in b demonstrating cavitation. (c) CT scan obtained in a third patient shows multiple nodules surrounded by a halo of ground-glass attenuation, a finding that indicates hemorrhage resulting from pulmonary infarction. (d) CT scan obtained in a fourth patient shows tracheobronchial aspergillosis with debris filling the left lower lobe bronchus (arrowheads) and consolidation in the left lower lobe.

 


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Figure 1b.  Pulmonary aspergillosis following hematopoietic stem cell transplantation. (a, b) CT scans obtained in two different patients show solitary nodules, with the nodule in b demonstrating cavitation. (c) CT scan obtained in a third patient shows multiple nodules surrounded by a halo of ground-glass attenuation, a finding that indicates hemorrhage resulting from pulmonary infarction. (d) CT scan obtained in a fourth patient shows tracheobronchial aspergillosis with debris filling the left lower lobe bronchus (arrowheads) and consolidation in the left lower lobe.

 


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Figure 1c.  Pulmonary aspergillosis following hematopoietic stem cell transplantation. (a, b) CT scans obtained in two different patients show solitary nodules, with the nodule in b demonstrating cavitation. (c) CT scan obtained in a third patient shows multiple nodules surrounded by a halo of ground-glass attenuation, a finding that indicates hemorrhage resulting from pulmonary infarction. (d) CT scan obtained in a fourth patient shows tracheobronchial aspergillosis with debris filling the left lower lobe bronchus (arrowheads) and consolidation in the left lower lobe.

 


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Figure 1d.  Pulmonary aspergillosis following hematopoietic stem cell transplantation. (a, b) CT scans obtained in two different patients show solitary nodules, with the nodule in b demonstrating cavitation. (c) CT scan obtained in a third patient shows multiple nodules surrounded by a halo of ground-glass attenuation, a finding that indicates hemorrhage resulting from pulmonary infarction. (d) CT scan obtained in a fourth patient shows tracheobronchial aspergillosis with debris filling the left lower lobe bronchus (arrowheads) and consolidation in the left lower lobe.

 


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Figure 2a.  DAH following hematopoietic stem cell transplantation. (a) Chest radiograph shows diffuse bilateral consolidation. (b) CT scan obtained in a different patient shows diffuse bilateral ground-glass attenuation with a superimposed reticular pattern representing thickened inter- and intralobular septa.

 


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Figure 2b.  DAH following hematopoietic stem cell transplantation. (a) Chest radiograph shows diffuse bilateral consolidation. (b) CT scan obtained in a different patient shows diffuse bilateral ground-glass attenuation with a superimposed reticular pattern representing thickened inter- and intralobular septa.

 


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Figure 3a.  CMV pneumonia following hematopoietic stem cell transplantation. CT scans obtained in two different patients show small nodules, along with patchy (a) and diffuse (b) ground-glass attenuation.

 


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Figure 3b.  CMV pneumonia following hematopoietic stem cell transplantation. CT scans obtained in two different patients show small nodules, along with patchy (a) and diffuse (b) ground-glass attenuation.

 


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Figure 4a.  Zygomycetes pneumonia following stem cell transplantation. CT scans obtained in two different patients show patchy consolidation (a) and ground-glass attenuation and nodules (b).

 


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Figure 4b.  Zygomycetes pneumonia following stem cell transplantation. CT scans obtained in two different patients show patchy consolidation (a) and ground-glass attenuation and nodules (b).

 


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Figure 5.  Varicella zoster pneumonia following stem cell transplantation. CT scan shows scattered small nodules (circles).

 


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Figure 6a.  Cryptogenic organizing pneumonia in the late posttransplantation period. CT scans show peripheral consolidation (a) and increased centrilobular attenuation (b).

 


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Figure 6b.  Cryptogenic organizing pneumonia in the late posttransplantation period. CT scans show peripheral consolidation (a) and increased centrilobular attenuation (b).

 


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Figure 7a.  Constrictive bronchiolitis in the late posttransplantation period. CT scans obtained during inspiration (a) and expiration (b) show hypoattenuating secondary lobules during expiration, which represent airtrapping from obstructed bronchioles.

 


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Figure 7b.  Constrictive bronchiolitis in the late posttransplantation period. CT scans obtained during inspiration (a) and expiration (b) show hypoattenuating secondary lobules during expiration, which represent airtrapping from obstructed bronchioles.

 



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Figure 8.  Secondary alveolar proteinosis following stem cell transplantation. CT scans obtained at different levels show geographically distributed ground-glass attenuation and interlobular septal thickening.

 


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Figure 9a.  Pseudomembranous colitis following stem cell transplantation. CT scans show diffuse wall thickening and edema of adjacent fat in the cecum (a) and sigmoid colon (b).

 


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Figure 9b.  Pseudomembranous colitis following stem cell transplantation. CT scans show diffuse wall thickening and edema of adjacent fat in the cecum (a) and sigmoid colon (b).

 


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Figure 10.  Candidiasis following stem cell transplantation. CT scan shows small hepatic abscesses (arrowheads) resulting from disseminated candidiasis.

 


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Figure 11a.  Hepatic VOD following hematopoietic stem cell transplantation. (a) Right upper quadrant US image demonstrates ascites and marked gallbladder wall thickening (cursors). (b) Doppler US images obtained in a more severely affected transplant recipient show pulsatile hepatofugal portal venous flow (top) and reduced diastolic hepatic arterial flow (bottom) indicated by an elevated resistive index (>0.8).

 


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Figure 11b.  Hepatic VOD following hematopoietic stem cell transplantation. (a) Right upper quadrant US image demonstrates ascites and marked gallbladder wall thickening (cursors). (b) Doppler US images obtained in a more severely affected transplant recipient show pulsatile hepatofugal portal venous flow (top) and reduced diastolic hepatic arterial flow (bottom) indicated by an elevated resistive index (>0.8).

 


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Figure 12a.  Severe hepatic VOD following stem cell transplantation. Contrast material–enhanced CT scans demonstrate heterogeneous hepatic enhancement (a) and a nonocclusive portal vein thrombus (arrow in b) resulting from slow portal venous flow caused by hepatic sinusoidal obstruction.

 


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Figure 12b.  Severe hepatic VOD following stem cell transplantation. Contrast material–enhanced CT scans demonstrate heterogeneous hepatic enhancement (a) and a nonocclusive portal vein thrombus (arrow in b) resulting from slow portal venous flow caused by hepatic sinusoidal obstruction.

 


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Figure 13.  Hemorrhagic cystitis following stem cell transplantation. Transverse US image through the bladder shows echogenic intravesicular debris and diffuse bladder wall thickening.

 


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Figure 14a.  Acute gastrointestinal GVHD. Contrast-enhanced CT scans through the upper (a), middle (b), and lower (c) abdomen demonstrate fluid-filled bowel loops, ascites, and mucosal enhancement. Severe mucosal damage has resulted in intraluminal hemorrhage (arrowheads in b and c).

 


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Figure 14b.  Acute gastrointestinal GVHD. Contrast-enhanced CT scans through the upper (a), middle (b), and lower (c) abdomen demonstrate fluid-filled bowel loops, ascites, and mucosal enhancement. Severe mucosal damage has resulted in intraluminal hemorrhage (arrowheads in b and c).

 


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Figure 14c.  Acute gastrointestinal GVHD. Contrast-enhanced CT scans through the upper (a), middle (b), and lower (c) abdomen demonstrate fluid-filled bowel loops, ascites, and mucosal enhancement. Severe mucosal damage has resulted in intraluminal hemorrhage (arrowheads in b and c).

 


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Figure 15.  Typhlitis (neutropenic colitis). Contrast-enhanced CT scan demonstrates a shaggy cecum and inflammation of the cecum and terminal ileum.

 


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Figure 16.  Benign pneumatosis intestinalis following stem cell transplantation. Contrast-enhanced CT scan (lung window) demonstrates pneumatosis intestinalis.

 


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Figure 17.  Chronic gastrointestinal GVHD. CT scan shows concentric bowel wall thickening.

 


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Figure 18.  Chart illustrates when specific pulmonary and abdominal complications are most likely to occur following hematopoietic stem cell transplantation.

 





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