Soft tissue sarcoma.

The bone scintigram (A) shows accumulation in the soft tissue of the thigh, which corresponds to a large soft tissue mass with a necrotic center on the CT scan (B).

 

Malignant Fibrohistiocytoma

The bone scintigram (A) shows radionuclide accumulation in the soft tissue of the right thigh. Axial MRI (B) demonstrates an intramuscular soft tissue mass, that was biopsy-proven malignatn fibrohistiocytoma.

 

Metastatic Neuroblastoma

Bone scan (anterior view) shows increased uptake in the soft tissues of the left mid thigh of a child with neuroblastoma.

Metastatic calcification

The bone scintigram (A) shows intense radiotracer accumulation in the soft tissue of the right shoulder, which corresponds to soft tissue calcification seen on plain radiography(B). This patient is in chronic renal failure.

Metastatic calcification

The bone scintigram (A) shows accumulation in the soft tissue of the right thigh, which corresponds to exuberant soft tissue calcification on the plain film (B). This patient has chronic renal failure.

Electrical burn.

The bone scan shows increased radionuclide uptake in the muscle of the forearm caused by rhabdomyolysis as a result of electrical burn.

Myositis ossificans.

A bone scintigram (A-B) demonstrates marked accumulation of radiotracer in the soft tissues of both distal thights and kneesleft greater than right . A radiograph (C) of the left knee shows soft tissue ossification consistent with myositis ossificans.


 

Myositis ossificans.

A bone scintigram (A) demonstrates marked accumulation of radiotracer in the region of the right hip. Plain radiograph (B) of the right hipshows ossification in the soft tissues consistent with myositis ossificans.
 

Lymph node uptake due to extravasation

A bone scintigram (A) demonstrates focal accumulation of radiotracer in the axilla due to extravasation at injection site. A repeat bone scan (B) 3 months later shows resolution of the previous finding.
 

Scar

Whole-body bone scan in anterior (A) and lateral (B) projections show linear radiotracer accumulation along the midepigastric region, where prior laparotomy scar is evident.

 

AV Fistula

Bone scan demonstrates increased radionuclide activity in the medial aspect of the left thigh with subtle asymmetric generalized soft tissue activity along the left thigh as compared to the right. An arteriovenous fistula is in place.

Urine contamination

Anterior image (A) of the bone scan shows 2 hot spots projecting over the right femur; repeat image (B) after decontamination shows disappearance of both hot spots.