13 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... : round cysts, evenly ... : 'signet ring sign ... #Radiology #CTChest ... #Cystic #Cysts
Causes of Cystic Renal Mass - Differential Diagnosis Algorithm
Benign - Anechoic on ultrasound, Well-demarcated on ultrasound/CT,
Causes of Cystic ... contrast - Simple Cysts ... sized kidneys, No cysts ... Enlarged kidneys, Cysts ... Carcinoma - No signs
Water Lily Sign (Camalote Sign) on Chest CT
 • Hydatid cyst in the lung with a
Water Lily Sign ... (Camalote Sign) ... on Chest CT • Hydatid ... cyst in the lung ... • DDx: Hydatid cyst
Comet Tail Sign on Chest CT
 • Curvilinear pleural based opacity directed towards the ipsilateral hilum
Comet Tail Sign ... on Chest CT • Curvilinear ... hilum • DDx: Rounded ... #Comet #Tail #Sign ... #diagnosis #radiology
Rounded atelectasis
The typical findings of rounded atelectasis on CT are pleural thickening, pleural-based mass and comet
Rounded atelectasis ... atelectasis on CT ... and comet tail sign ... local pleuritis causes ... #Diagnosis #Radiology
Summary table of common benign breast diseases and how to manage them. 
Fibroadenoma:
 • Most common
bilateral Breast cyst ... Fluid-filled, round ... bruising/erythema/sign ... #differential #diagnosis ... #surgery #causes
he CT shows a lesion that originates in the lung.
Many would have a lungcancer on the
he CT shows a lesion ... their differential diagnostic ... the comet tail sign ... #CTChest #RoundedAtelectasis ... #CometTail #Sign
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
: • Cystic fibrosis ... no evidence of cystic ... Nasal polyps and signs ... parenchyma Diagnosis ... CT) • Broncho-arterial
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
this pattern was caused ... by multiple cysts ... challenging differential diagnosis ... the central dot sign ... #CXR #CTChest #
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
myasthenia Diagnosis ... test - Cogan sign ... - Peek sign ... Imaging - CT Chest ... #management #neurology