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Case
Studies
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History |
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A 71 year-old
male with metastatic melanoma on the left shoulder, discovered 12/94. |
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Original
Diagnosis |
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A CT
performed on 7/10/95 demonstrated a tumor of the distal femur and
adjacent soft tissue with negative findings in the abdomen. A
bone scan from 7/13/95 showed on abnormal femur and four spine
lesions. |
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PET
Findings |
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A whole-body
FDG PET scan demonstrated numerous lesions throughout the body. |
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Change in
Treatment |
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The patient
was scheduled for an amputation based on CT and bone scan
results. After the PET scan found multiple lesions, surgery
was cancelled, avoiding both the cost and the trauma of an operation
that would not have been effective. |
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History |
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A 63 year-old
male with lung cancer. A tumor was removed from the right
upper lobe. |
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Original
Diagnosis |
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Several
months later a CT scan showed a new lesion in the left lung. |
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PET
Findings |
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A whole-body
FDG PET scan found focal FDG accumulation in the left lung lesion,
as shown in figure 1. In addition, several other lesions
unsuspected by CT were seen in the right lung and mediastinal lymph
nodes. |
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Change in
Treatment |
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The
conventional treatment plan based on CT results would have been a
thoracotomy to resect the lesion in the left lung. After the
PET scan found other areas of focal FDG uptake, the treatment was
switched to chemotherapy. The lesions could still be seen on a
follow-up CT scan after chemotherapy, but a second PET study showed
the FDG uptake had returned to normal, avoiding a possible
resection. |
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History |
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A 64 year-old
male who was found to have serum CEA elevation for 16 months after
resection of colon carcinoma. |
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Original
Diagnosis |
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Endoscopy
with biopsy demonstrated recurrence at the site of anastamosis at
the hepatic flexure. CT of the abdomen and pelvis showed no
abnormality. |
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PET
Findings |
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Preoperative
PET scan showed a new abnormal focus in the mediastinum and two on
the lumbar spine (left image), and a focus in left lobe of the liver
and two in the left chest wall (right image). |
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Change in
Treatment |
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The findings
indicate local recurrence and metastatic disease to the liver,
mediastinum, and skeleton. This patient will have to be placed
in chemotherapy in addition to any surgery planned. |
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LSQ Medical Building
6 Ohio Drive
Lake Success, NY 11042
Tel: (516) 355-5550
Fax: (516) 355-5454
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E-Mail
- info@lipetscan.com |
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