RadioGraphics
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

DOI: 10.1148/rg.262055126
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Araujo, C. R.
Right arrow Articles by Moreira, M. A. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Araujo, C. R., Jr
Right arrow Articles by Moreira, M. A. R.
Related Collections
Right arrow Musculoskeletal Radiology
Right arrow Pediatric Radiology

Dysplasia Epiphysealis Hemimelica of the Patella1

Cyrillo R. Araujo, Jr, MD, Simone Montandon, MD, Cristiano Montandon, MD, Kim-Ir-Sen S. Teixeira, MD, PhD, Frederico B. Moraes, MD and Marise A. R. Moreira, MD, PhD

1 From the Departments of Diagnostic Imaging (C.R.A., S.M., C.M., K.S.T.), Orthopedics (F.B.M.), and Pathology (M.A.R.M.), Hospital das Clinicas, 1a Av s/n, Setor Universitario, Campus I, Universidade Federal de Goias, 74605-020 Goiania, Goias, Brazil. Received May 31, 2005; revision requested June 30 and received July 28; accepted July 29. All authors have no financial relationships to disclose.

Figure 1
View larger version (147K):

[in a new window]
  		Figure 1.  Initial radiograph (lateral projection) shows enlargement of the patella with sclerosis and irregular borders.

 

Figure 2
View larger version (149K):

[in a new window]
  		Figure 2.  Follow-up radiograph (lateral projection) shows increased volume of the patella with extensive osseous proliferation.

 

Figure 3
View larger version (137K):

[in a new window]
  		Figure 3a.  CT scans obtained with soft-tissue (a) and bone (b) windows show an osteochondral tumor expanding the medial ossification center of the patella (arrow). Note the large joint effusion (arrowheads in a). The lateral ossification center of the patella is present and is slightly displaced (arrowhead in b).

 

Figure 3
View larger version (121K):

[in a new window]
  		Figure 3b.  CT scans obtained with soft-tissue (a) and bone (b) windows show an osteochondral tumor expanding the medial ossification center of the patella (arrow). Note the large joint effusion (arrowheads in a). The lateral ossification center of the patella is present and is slightly displaced (arrowhead in b).

 

Figure 4
View larger version (170K):

[in a new window]
  		Figure 4a.  Sagittal intermediate-weighted (a) and axial T1-weighted (b) MR images show the osteochondral tumor expanding the medial ossification center of the patella (arrow in b). The lateral ossification center is present and is slightly displaced (arrowhead in b). The areas of low signal intensity within the lesion indicate regions of calcification or ossification that have expanded since the initial radiographic studies. The intermediate signal intensity within the lesion on the intermediate- and T1-weighted images represents the cartilaginous content of the lesion; this cartilaginous content is similar in appearance to the epiphyseal cartilage of the distal femur (arrows in a).

 

Figure 4
View larger version (154K):

[in a new window]
  		Figure 4b.  Sagittal intermediate-weighted (a) and axial T1-weighted (b) MR images show the osteochondral tumor expanding the medial ossification center of the patella (arrow in b). The lateral ossification center is present and is slightly displaced (arrowhead in b). The areas of low signal intensity within the lesion indicate regions of calcification or ossification that have expanded since the initial radiographic studies. The intermediate signal intensity within the lesion on the intermediate- and T1-weighted images represents the cartilaginous content of the lesion; this cartilaginous content is similar in appearance to the epiphyseal cartilage of the distal femur (arrows in a).

 

Figure 5
View larger version (133K):

[in a new window]
  		Figure 5a.  (a) Photograph obtained during surgery shows the whitish bright lesion with a lobulated contour (arrows) in the medial aspect of the knee. (b) Photograph obtained after excision shows the osteochondral tumor with its whitish cartilaginous cap, which is better seen after excision.

 

Figure 5
View larger version (114K):

[in a new window]
  		Figure 5b.  (a) Photograph obtained during surgery shows the whitish bright lesion with a lobulated contour (arrows) in the medial aspect of the knee. (b) Photograph obtained after excision shows the osteochondral tumor with its whitish cartilaginous cap, which is better seen after excision.

 

Figure 6
View larger version (205K):

[in a new window]
  		Figure 6a.  (a) Low-power photomicrograph (original magnification, x100; hematoxylin-eosin stain) shows areas of normal bone (arrow), which are indicative of an osteochondroma. (b) High-power photomicrograph (original magnification, x200; hematoxylin-eosin stain) shows areas of abundant enchondral calcification (arrows), which are indicative of an osteochondroma. There is no evidence of malignancy.

 

Figure 6
View larger version (176K):

[in a new window]
  		Figure 6b.  (a) Low-power photomicrograph (original magnification, x100; hematoxylin-eosin stain) shows areas of normal bone (arrow), which are indicative of an osteochondroma. (b) High-power photomicrograph (original magnification, x200; hematoxylin-eosin stain) shows areas of abundant enchondral calcification (arrows), which are indicative of an osteochondroma. There is no evidence of malignancy.

 




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
RADIOGRAPHICS RADIOLOGY RSNA JOURNALS ONLINE
Copyright © 2006 by the Radiological Society of North America.