Case of the Week Answers
Answer to Case of the Week From 9/17/17
First two images on the left- 3 months ago, round oil cyst with almost imperceptible walls at the lower inner quadrant
Two images on the right- New thickening and irregularity of the walls of the oil cyst- likely an infected oil cyst.
Management- Can followup in 3 months to check for interval resolution. BIRADS-3
Answer to Case of the Week From 9/10/17
Findings: Bright T2 dark signal instead of the normal T2 dark signal near the plantar fasica insertion site at the plantar calcaneus with thickening. Abnormal thickening on T1 weighted imaging.
Diagnosis: Full thickness plantar fascia tear
Answer to Case of the Week From 9/3/17
Findings: Meniscal chondrocalcinosis with relatively increased osteophytosis and joint space narrowing at the patellofemoral joint.
Diagnosis: Most likely CPPD (Calcium Pyrophosphate Deposition Disease). Also, consider atypical osteoarthritis.
Answer to Case of the Week From 8/27/17
Radiopharmaceutical: Gallium-68 Dotatate (Similar mechanism of action to octreotide)
Diagnosis: Normal variant uptake in the pituitary. Unremarkable Ga-68 Dotatate PET-CT Scan
Answer to Case of the Week From 8/20/17
Enhancing infiltrative hepatocellular carcinoma (HCC). In this case, there was abnormal arterial enhancement at the periphery of the liver.
Gallium is often warm or hot at the site of HCC. In this case, it was of similar uptake compared to the remainder of the liver.
Answer to Case of the Week From 8/13/17
(Right Image) New Right Iliacus Retroperitoneal Hemorrhage
Answer to Case of the Week From 8/6/17
Leftmost study: CT scan with subtle sclerotic lesion at the left ischial tuberosity
2nd to left study: Bone scan showing a cortically active left ischial tuberosity lesion likely corresponding to the CT scan findings
Three right most studies: Axumin PET-CT showing left inguinal adenopathy and no Axumin active lesion corresponding to the sclerotic lesion on PET
Even though the lesion on Axumin lesion is not active, it is still highly suspicious for a bone metastasis give the positivity on bone scan. Axumin is not reliable as a predictor of bone metastases and sclerotic bone lesions if negative (less active than blood pool). These lesions on if not active on Axumin and seen on CT scan should be treated with caution and worked up further!!!
Answer to Case of the Week From 7/29/17
Right adnexal dermoid. Pelvic kidney.
Answer to Case of the Week From 7/22/17
Narrowing/stricture from duodenitis/duodenal ulcer
Answer to Case of the Week From 7/15/17
Non displaced glenoid fracture. Here is the film showed previously and the MRI confirmation.
Answer to Case of the Week From 7/8/17:
Right inguinal hernia with entrapped small bowel causing small bowel obstruction