Explanation
There is an aggressive lytic process centered on the metaphysis with cortical destruction and periosteal reaction. The most likely diagnosis is osteomyelitis and any supportive clinical features of sepsis should be sought. Langerhans cell histiocytosis (eosinophilic granuloma) could produce this appearance and is certainly a good differential diagnosis if the patient is not septic. Likewise, Ewing sarcoma could produce this appearance in a patient this age and would be another differential to consider, although the metaphyseal location would be unusual. Giant cell tumor of bone would not be in the differential as this occurs exclusively after the growth plate is closed and is typically subarticular in location with non-aggressive features.
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King of radiology🤍🖤
14 Feb, 05:26
A 60-year-old woman with a history of breast cancer 10 years previously presented with back pain and a bone scan was arranged. Other than metastatic disease, what would be a cause of increased uptake?
a Multiple myeloma
b Dental disease
c Haemangioma
d Acute fracture
e Radiotherapy field
Answer
B: Dental disease
A radiotherapy field is a photopenic area (along with internal or external artefacts, avascular lesions, multiple myeloma, haemangioma and advance carcinoma). Increased uptake can be pathological or physiological. Pathological factors include: metastatic disease, joint disease, traumatic or stress fracture, postoperatively, Paget's, disseminated secondary disease, metabolic bone disease and dental infection. Physiological factors include: artefacts, age factors, soft-tissue uptake.
a Multiple myeloma
b Dental disease
c Haemangioma
d Acute fracture
e Radiotherapy field
Answer
A radiotherapy field is a photopenic area (along with internal or external artefacts, avascular lesions, multiple myeloma, haemangioma and advance carcinoma). Increased uptake can be pathological or physiological. Pathological factors include: metastatic disease, joint disease, traumatic or stress fracture, postoperatively, Paget's, disseminated secondary disease, metabolic bone disease and dental infection. Physiological factors include: artefacts, age factors, soft-tissue uptake.
King of radiology🤍🖤
14 Feb, 05:24
A 36-year-old man presented with leg pain and an abnormality was noted on the initial radiograph. He then had a bone scan, which appeared normal with no evidence of the abnormality. What would be a possible explanation for this?
a Acute fracture
b Osteomyelitis
C Lymphoma
d Primary hyperparathyroidism
e Paget's disease
Answer
A: Acute fracture
All the other answers are for causes of an abnormal bone scan with no findings (or minimal changes) on plain radiography. Causes of a positive radiograph with a normal bone scan are: metabolically inactive benign
conditions (bone cysts/ bone island/exostoses), recent fractures (less than 48 hours), multiple myeloma, osteoporosis, and rarely metastases if there is no osteoblastic activity
a Acute fracture
b Osteomyelitis
C Lymphoma
d Primary hyperparathyroidism
e Paget's disease
Answer
All the other answers are for causes of an abnormal bone scan with no findings (or minimal changes) on plain radiography. Causes of a positive radiograph with a normal bone scan are: metabolically inactive benign
conditions (bone cysts/ bone island/exostoses), recent fractures (less than 48 hours), multiple myeloma, osteoporosis, and rarely metastases if there is no osteoblastic activity
King of radiology🤍🖤
12 Feb, 16:40
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11 Feb, 22:19
neuroendrocine tumours (e.g., glomus tympanicum), and other malignancies (small cell lung cancer, lymphoma, and breast cancer). There is also uptake in a few tumours that do not express the receptor (meningioma, astrocytoma).
King of radiology🤍🖤
06 Feb, 20:19
Orbital diseases part 1(MCQ test)
10 questions
https://docs.google.com/forms/d/e/1FAIpQLScmxYzPc-o9y0vwfE3cq-P2lS7v5ReY0jWdk5qfcj2ZITMYog/viewform?usp=header
10 questions
https://docs.google.com/forms/d/e/1FAIpQLScmxYzPc-o9y0vwfE3cq-P2lS7v5ReY0jWdk5qfcj2ZITMYog/viewform?usp=header
King of radiology🤍🖤
05 Feb, 12:25
King of radiology🤍🖤
05 Feb, 12:20
Thickening with high signal PD fat sat of the proximal and posterior part of the patellar tendon with oedematous infiltration of the adjacent fat and the lower pole of the patella. Jumper's knee
King of radiology🤍🖤
05 Feb, 09:28
The Klein line is drawn along the lateral aspect of the femoral neck and should intersect a portion of the lateral capital epiphysis.
On the right, the green line indicates the normal appearance of the Klein line.
On the left, the red line is abnormal and barely intersects the capital epiphysis.( SCFE)
On the right, the green line indicates the normal appearance of the Klein line.
On the left, the red line is abnormal and barely intersects the capital epiphysis.( SCFE)
King of radiology🤍🖤
05 Feb, 09:27
12 years child with groin and left thigh pain and a limp over a few weeks.
Findings:
Widening and irregularity of the left capital femoral physis when compared to the right side. Diagnosis: Slipped capital femoral epiphysis (SCFE)
Widening and irregularity of the left capital femoral physis when compared to the right side. Diagnosis: Slipped capital femoral epiphysis (SCFE)
King of radiology🤍🖤
05 Feb, 09:10
The glenoid bare spot is seen at the central glenoid cartilage, where the glenoid cartilage is markedly thin or completely absent. It is considered to be a normal variant.
King of radiology🤍🖤
05 Feb, 08:38
what is the sign and diagnosis? The J sign refers to the appearance of the inferior glenohumeral ligament in the presence of humeral avulsion of the glenohumeral ligament (HAGL lesion)
King of radiology🤍🖤
04 Feb, 12:12
A 30-year-old man presents with painful right medial foot. What is the most likely diagnosis shown on this selected axial T2 fat sat image?
Diagnosis:
Click👉Accessory navicular syndrome
Diagnosis:
Click👉
King of radiology🤍🖤
29 Jan, 09:17
The diagnosis was an anterior shoulder dislocation.
King of radiology🤍🖤
29 Jan, 05:38
Explanation
When amyloid proteins fold incorrectly they may form fibrils and sheets that are not broken down intracellularly and instead are deposited in extracellular tissues. The appearance is protean and it can strike virtually any part of the body. Clinically, and in imaging, it can share similarities to leukemia and myeloma. Biopsy is usually necessary to differentiate.
This patient's CT shows a diffusely enhancing mass in the left hepatic lobe, although amyloidosis can present in the liver as either hyper- or hypoenhancing. There diffusely low signal in the spinal bone marrow with a T12 compression injury.
Her liver biopsy (and a subsequent bone marrow biopsy) showed light chain amyloidosis.
This patient's CT shows a diffusely enhancing mass in the left hepatic lobe, although amyloidosis can present in the liver as either hyper- or hypoenhancing. There diffusely low signal in the spinal bone marrow with a T12 compression injury.
Her liver biopsy (and a subsequent bone marrow biopsy) showed light chain amyloidosis.
King of radiology🤍🖤
28 Jan, 12:03
Regarding the gradual swelling and tenderness of the fifth toe and imaging appearances of the mass, the tenosynovial giant cell tumor was the most probable diagnosis. Plantar fibromatosis also is in the differential diagnosis of the mentioned mass.
King of radiology🤍🖤
28 Jan, 12:02
Well defined lobulated hypointense soft tissue mass lesion encircling the fifth toe flexor tendon, extending to the lateral extensor tendons that start from the level of metatarsophalangeal joint down to the distal interphalangeal joint in planter side.
The mass causing to cortical erosions and scalloping of the 5th toe phalangeal bones.
The mass causing to cortical erosions and scalloping of the 5th toe phalangeal bones.
King of radiology🤍🖤
28 Jan, 11:40
20-year-old with back pain There is kyphotic deformity of lower dorsal vertebral bodies with irregularities of vertebral plateau and Schmorl's nodule. This is compatible with Scheuermann disease.
King of radiology🤍🖤
28 Jan, 11:05
An exam classic. Typical appearances of a disease in an atypical location.
King of radiology🤍🖤
27 Jan, 14:18
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King of radiology🤍🖤
27 Jan, 12:46
The diagnosis was a reverse Segond fracture and patellar dislocation.
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27 Jan, 12:39
The diagnosis was
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26 Jan, 13:26
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26 Jan, 09:13
Mnemonic SATCHMO for remembering the differentials for sellar and parasellar region lesions
King of radiology🤍🖤
25 Jan, 09:22
It results from a dorsal and lateral dislocation of the talonavicular joint.
King of radiology🤍🖤
25 Jan, 09:17
The UCL is torn and retracted proximal to the adductor aponeurosis. This appearance can be described as a "yo-yo on a string" characteristic of a Stener lesion.
King of radiology🤍🖤
23 Jan, 08:52
*** rickets: Nodularity at costochondral junction (rachitic rosary)
*** scurvy: The costochondral junction is more angular and has a sharper step-off (scorbutic rosary). The sternum is usually found to be depressed.
**** chondrodystrophy
Appearances in this case most likely represent rickets.
King of radiology🤍🖤
23 Jan, 08:49
King of radiology🤍🖤
23 Jan, 07:27
Calcific tendinitis of the longus colli muscle
(A) a small calcification anterior to the C4 vertebral body on the radiograph (arrow).
(B) the amorphous calcification is better evaluated on the CT (arrow).
sagittal STIR (C) and coronal T2-weighted (D) images show edema anterior to the longus colli muscle.
Calcific tendinitis of the longus colli muscle is an inflammatory/granulomatous response to deposition of calcium hydroxyapatite crystals in the tendons of the longus colli muscle.
(A) a small calcification anterior to the C4 vertebral body on the radiograph (arrow).
(B) the amorphous calcification is better evaluated on the CT (arrow).
sagittal STIR (C) and coronal T2-weighted (D) images show edema anterior to the longus colli muscle.
Calcific tendinitis of the longus colli muscle is an inflammatory/granulomatous response to deposition of calcium hydroxyapatite crystals in the tendons of the longus colli muscle.
King of radiology🤍🖤
22 Jan, 13:27
The diagnosis
King of radiology🤍🖤
22 Jan, 12:34
🧠The diagnosis was
King of radiology🤍🖤
22 Jan, 12:32
🧠The diagnosis was
King of radiology🤍🖤
22 Jan, 12:32
🧠The diagnosis was
King of radiology🤍🖤
22 Jan, 12:30
👑 The diagnosis was
King of radiology🤍🖤
21 Jan, 20:47
King of radiology🤍🖤
21 Jan, 09:45
King of radiology🤍🖤
21 Jan, 09:36
The case illustrates features of the chorioretinal coloboma
King of radiology🤍🖤
21 Jan, 09:32
Explanation
Colobomas are usually congenital abnormalities with numerous other associated abnormalities. The eye is usually small and has a posterior scleral defect.
Staphylomas, in contrast, are usually acquired and cause myopia. The globe is enlarged due to scleral thinning. THey do not usually have other associated abnormalities.
Staphylomas, in contrast, are usually acquired and cause myopia. The globe is enlarged due to scleral thinning. THey do not usually have other associated abnormalities.
King of radiology🤍🖤
20 Jan, 20:04
Explanation
Fracture of an osteochondroma is usually the result of trauma and not considered a sign of malignant transformation.
Features that should raise the possibility of malignant transformation can be remembered with the mnemonic GLAD PaST:
G: growth after skeletal maturity
L: lucency (new)
A: additional scintigraphic activity
D: destruction (cortical)
P: pain after puberty
a: and
S: soft tissue mass
T: thickened cartilage cap >1.5 cm
Features that should raise the possibility of malignant transformation can be remembered with the mnemonic GLAD PaST:
G: growth after skeletal maturity
L: lucency (new)
A: additional scintigraphic activity
D: destruction (cortical)
P: pain after puberty
a: and
S: soft tissue mass
T: thickened cartilage cap >1.5 cm
King of radiology🤍🖤
20 Jan, 20:02
This pattern of cortical irregularity and saucerization at the posterior aspect of the medial femoral condyle is typical of cortical desmoid. This is a benign self-limiting appearance related to the origin of the medial head of gastrocnemius or adductor magnus insertion. It is a classic "don't touch lesion" which should be confidently diagnosed on imaging to avoid unnecessary over-investigation and biopsy.
King of radiology🤍🖤
20 Jan, 19:54
King of radiology🤍🖤
20 Jan, 19:45
It is classified under two main types:
primary synovial chondromatosis: predominantly monoarticular disorder of unknown etiology
secondary synovial chondromatosis: resulting in intra-articular loose bodies from causes such as trauma, osteoarthrosis and neuropathic arthropathy
primary synovial chondromatosis: predominantly monoarticular disorder of unknown etiology
secondary synovial chondromatosis: resulting in intra-articular loose bodies from causes such as trauma, osteoarthrosis and neuropathic arthropathy
King of radiology🤍🖤
20 Jan, 19:44
King of radiology🤍🖤
18 Jan, 13:32
King of radiology🤍🖤
26 Nov, 16:49
King of radiology🤍🖤
26 Nov, 03:38
King of radiology🤍🖤
20 Nov, 17:01
What is the sign and what is the dx? Bright tounge sign in amyotrophic lateral sclerosis
King of radiology🤍🖤
18 Nov, 14:11
What is the sign? and diagnosis?The motor band sign is a radiological sign described in amyotrophic lateral sclerosis (ALS).
King of radiology🤍🖤
11 Nov, 02:41
multiple spleens are seen on the right side, right sided stomach, transverse liver with absence of the intra hepatic portion of the IVC and dilated azygos vein
King of radiology🤍🖤
09 Nov, 14:37
King of radiology🤍🖤
07 Nov, 14:07
• Describes a state where the ulna is
abnormally shortened (by more than
2.5 mm) compared to the radius and
plays an important role in wrist
pathology.
• There is a significant association between negative ulnar variance and Kienböck disease, although the majority of people with negative ulnar variance do not have this condition.
King of radiology🤍🖤
31 Oct, 17:09
Diffuse increased attenuation of the liver with small sized calcified spleen (autospleenectomy )
King of radiology🤍🖤
29 Oct, 08:39
Density/signal intensity is near CSF with the exception of FLAIR which shows incomplete suppression (dirty signal not black like CSF).
Marked hyperintensity on DWI.
King of radiology🤍🖤
23 Oct, 05:48
#Sings The “chain of lakes” sign metaphorically describes the appearance of the pancreatic duct in patients with chronic pancreatitis
King of radiology🤍🖤
23 Oct, 05:45
#signs sausage-like enlargement of the pancreas... Autoimmune pancreatitis
King of radiology🤍🖤
16 Oct, 14:48
King of radiology🤍🖤
16 Oct, 14:39
Trauma years ago, now complaining of sensornerural hearing loss Dx : superficial siderosis
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