Known patient with recently diagnosed poorly differentiated vaginal carcinoma with staging FDG PET/CT study. What is the study showing?
– A hypermetabolic lower vaginal lesion representing the known vaginal neoplasm associated with a larger hypermetabolic uterine body neoplastic lesion suggesting synchronous malignant process
– Multiple hypermetabolic enumerable bilateral lung deposits associated with a single right lower para-tracheal nodal deposit
Ossification of the membranous labyrinth, high-density bone deposition involving all the cochlear turns.
This usually occurs as a complication of suppurative labyrinthitis, either due to otomastoiditis or meningitis. Other causes include trauma, autoimmune diseases, and surgery.
What do you see on the following images?
TB cervical lymphadenitis
Mild progression in size of multiple necrotic lymph nodes in bilateral supraclavicular, axillary regions, at all anterior and posterior cervical chain (more prominent at right side lower anterior cervical chain)
30-year-old male:
· Persistent pain in his right ankle, for a year long, a synovial mass was demonstrated on ultrasound. · Ankle MRI was performed
* Benign proliferative condition affecting the synovial membrane. Most commonly monoarticular
* MRI: Mass-like synovial proliferation with lobulated margins and articular erosions
– Signal -> T1: low-intermediate ; DPFS/STIR: heterogeneous with areas of high signal ; GE: blooming artifact ; T1GD: variable enhancement.
Differential diagnosis includes:
* Scarring – capsulitis
* Siderotic synovitis
* Synovial sarcoma
What do you see on the following images?
Finger in glove; ABPA
Bilateral sacroiliac joint space narrowing, subchondral erosions, subchondral sclerosis, and subchondral fatty marrow infiltration.
Bilateral symmetrical:
Ankylosing spondylitis
Inflammatory bowel disease.
Bilateral asymmetrical:
Psoriasis
Reactive arthritis (Reiter syndrome)
Ankylosing spondylitis
Erosions with high signal intensity on STIR or T2- weighted images, subchondral edema, and enhancement within or adjacent to the sacroiliac joint.
Low signal intensity on T1- and T2- weighted images, subchondral sclerosis, narrowing of the joint spaces, bone bridging, and ankylosis.
72-year-old male:
– With known pulmonary neuroendocrine tumor
– New onset dorsal pain
Vertebral blastic metastasis from pulmonary neuroendocrine origin presenting as an ivory vertebra.
– Paget
– Lymphoma
– Metastasis on men: prostate
– Matastesis on women: breast
Do not forget: transitional cell carcinomas, neuroendocrine tumours, medullary thyroid carcinoma and osteosarcoma.
83-year-old female:
– Acute loss of function right arm and leg
– Bleeding? Ischemia?
Dense left medial cerebral artery with subtle obscuring of grey-white matter interface temporal operculum of insula; early ischemia.
CTA: Occlusion M1 Patient received IV thrombolysis and her symptoms improved
53-year-old male:
– Hemodialysis patient
– Presents with a very large scrotum, size of a football
– Patient is not sick, no fever
– Laboratory results are normal
– US: Incarcerated inguinal hernia? Hydrocele? Malignancy?
Diagnosis: Extensive scrotal lymphoedema
– Extensive scrotal wall thickening associated with diffuse lymphoedema extending to the base of penis not involving the penile corpora
– No extension into the deep subcutaneous tissue planes, inguinal canal, or muscles
– No extension to the groin or lower abdomen
– No inguinal adenopathy
– Both testicles are morphologically normal with no associated hydroceles
– There is no associated soft-tissue mass
A 6-year-old boy presenting to emergency department with headache, nausea, and vomiting
Intra-axial cystic lesion with mass effect shows CSF signal intensity on all sequences, without enhancement and perilesional edema
Differential diagnosis include
* Parasitic diseases (hydatid cyst) spheric
* Neuroglial cyst may have surrounding gliosis
* Porencephalic cyst surrounding gliosis, communicates with ventricle
Same cystic lesion in superior lobe of left lung
Hydatid cyst disease
Both lesions were treated by surgery
