Case Identification
Case ID Number
Tumor Type
Body region
Position within the bone
Periosteal reaction
Benign or Malignant
Clinical case information
Case presentation
This 16 year old boy has a slowly enlarging bump or mass on the anterior crest of the tibia, a few centimeters below the tibial tubercle. He is healthy, and the bump does not bother him very much.
Radiological findings:
There is a mass, about 2 by 2 centimeters, more or less round, on the surface and partially within the anterior cortex of the tibia, with the top portion being lucent, and minimal or no periosteal reaction. The sides of the lesion are bone. AP and lateral xrays show nothing. An oblique lateral of the tibia made to demonstrate the lesion, with one of the patient's finger rings taped to the skin, is shown.
Laboratory results:
None
Differential Diagnosis
Osteochondroma, ossifying fibroma (osteofibrous dysplasia), periosteal osteosarcoma, other.
Further Work Up Needed:
An excisional biopsy was performed.
Pathology results:
pending
Special Features of this Case:
The patient was treated at the HEODRA hospital in Leon, Nicaragua
Image
Secret Tumor Name
Case ID Number
Image Types
Image modality
Tumor Name
Example Image
yes
Benign or Malignant
Body region
Location in the bone
periosteal reaction
position within the bone
Tumor behavior
Tumor density
