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Hydronephrosis Crescent sign
Rim sign
Soap bubble appearance
Polycystic kidney Spider leg appearance
Swiss cheese nephrogram
Sun burst nephrogram
Ectopic ureter Drooping flower appearance
Horse shoe kidney Flower vase appearance of ureter
Ureterocele Spring onion appearance
Cobra head appearance
Tubercular cystitis Thimble bladder
Schitosomiasis of bladder Sandy patches
BPH Fish hook bladder
Papillary necrosis Egg in cup appearance
Signet ring sign on IVU
Lobster claw sign on IVU
Ball on Tee sign on IVU
ADPCKD Black nephrogram
ARPCKD Patchy chaotic nephrogram
Acute renal artery occlusion Renal fascia sign
Medullary sponge kidney Bunch of flowers appearance
Paintbrush appearance
Pseudoureterocele Edling sign
Posterior Urethral Valves Wind in the sail appearance
Keyhole appearance
Extraperitoneal bladder rupture Sunburst appearance
Bladder in bladder appearance
Molar tooth sign
Reflux nephropathy involving the lower pole of a duplicated collecting system Nubbin sign
Ureteral transitional cell carcinoma Goblet sign
Bergmans coiled catheter sign

Everything About Bone Tumours

Nocturnal pain relieved by salicylates Osteoid osteoma
Nocturnal pain not relieved by salicylates Osteoblastoma
Trumpet shaped metaphysis
Coat hanger appearance
Diaphyseal aclasis
O ring sign
Punctate / Stippled calcification
Flicks / wispd of calcifications in a luscent area
a/w Olliers disease
a/w Maffucci syndrome
Celery stick appearance
Eccentric geographic lytic lesion
Dense punctate mottled calcification
Chickenwire mineralization
Codmans tumour
Codmans triangle
Sunray appearance
Bone tumour with calcified secondaries
Endosteal scalloping
Most common malignant bone tumour to appear benign radiologically
Dense popcorn / comma calcification
Eccentric epiphyseal lytic lesion with soap bubble appearance GCT
Physaliferous cells Chordoma
Homer Wright pseudorosettes
Onion skin lesions
Bone tumour resembling osteomyelitis
Ewings sarcoma
Double density sign Osteoid osteoma
Ballooned appearance
Fallen fragment sign
Unicameral bone cyst
Finger in balloon, Pencil in cup appearance ABC
Herrring tone arrangement of fibroblasts Fibrosarcoma
Benign bone condition with cellular atypia Chondromyxoid fibroma
Honeycomb appearance Adamatinoma
Pinwheel pattern
Storiform/whorled/radiating bundles
Non-ossifying fibroma, fibrous cortical defect
Shephard crooks deformity of femur
Ring of orange
Smoky matrix
Leontiosis ossea
Fibroud dysplasia
Coast of Maine appearance Polyostotic fibrous dysplasia / mccune albright syndrome
Driven snow appearance Pindborgs tumour
Sring sign Parosteal osteosarcoma
Target calcification Osseous lipoma
Polka dot sign
Corduroy / Accordion vertebra
Vertebral hemangioma
Geographic skull Eosinophilic granuloma
  1. Aneurysmal cyst
  1. Enchondroma
  1. Sarcoma
  1. Plasmacytoma ~
  1. Giant cell tumor
  1. Brown tumour (PTH)
  1. Fibrous dysplasia
  1. Hemophilia

Moth eaten appearance of bone is seen in

  1. MM
  2. Lymphoma
  3. Sarcoma
  4. Osteomyelitis
  5. Leukemia
  6. Histiocytosis -x
Enlargement of Epiphysis
  1. JRA
  1. Rickets
  1. Hemophilia
  1.  TB, fungal Arthritis

Extra Edge
  1. Enlargement of Epiphysis is characteristic of JRA.
  2. Epiphyseal dysgenesis is characteristic of hypothyroidism.
  3. Epiphyseal widening is seen in rickets.
  4. Epiphyseal loss of density is seen in scurvy.


Most common primary CNS neoplasm Glioblastoma multiforme
2nd Most common primary CNS neoplasm Meningioma
Most common intracranial germ cell tomour Germinoma
Most common Mixed glioma Oligo-astrocytoma
Most common Site of Schwannoma Vestibular division on VIIIth nerve
Most common Intracranial tumour in neonates Teratoma
Most common primary intracranial neoplasm in sellar / parasellar region Pituitary adenoma
Most common intraaxial posterior fossa tumor in adults Metastasis from extracranial sites
Most common of all primary intracranial neoplasms Glioblastoma multiforme
Most common supratentorial neoplasm in adults Glioblastoma multiforme
Most common intracranial tumour to calcify Oligodendroglioma
Most common site of cellular ependymoma in brain 4th ventricle
Most common nonglial primary brain tumour Meningioma
Most common intracranial extraaxial tumour Meningioma
Most common Spinal extradural neoplasm Metastasis
Most common benign spinal neoplasm Vertebral hemangioma
Most common malignant extradural neoplasm Metastasis
Most common spinal intramedullary tumour in adults Ependymoma
Most common spinal intramedullary tumour in children Astrocytoma
Osteolytic Bone Metastasis
  1. Neuroblastoma
  2. Lung cancer
  3. Breast cancer
  4. Thyroid cancer
  5. Kidney
  6. Colon
Osteoblastic Bone Metastasis
  1. Prostate cancer
  2. Breast cancer
  3. Brain (Medulloblastoma)
  4. Bronchus
  5. Bladder
  6. Buie (carcinoid)
  7. Lymphoma

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