3 results
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
pneumonia • formerly BOOP ... CXR: Peripheral distribution ... , cavities • HRCT ... zone, GGO, small ... #BOOP #pulmonary
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
Atoll Sign (Reverse-Halo ... CT • Central GGO ... consolidation • DDx: COP ... #Sign #CT #Lung ... #Pulmonary #diagnosis
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
of the reversed halo ... sign (RHS). ... adenocarcinoma in situ; COP ... #Diagnosis #Pulmonary ... #Differential #Algorithm