Name : Shahram
Family : Kahkouee
Affiliation :Radiology Department ,Masih Hospital.SBMU
Academic Degree : Assistant Professor of Radiology
Resident : fatemeh mousavian
Gender : Female
Age : 29
Male patient complaint acute onset pleuritic pain and cough
Multifocal subpleural consolidations with reversed halo sign.
Huge cardiomegaly is present with subtle pleural reaction bilaterally.
Initially it was thought of being highly specific for cryptogenic organizing pneumonia (COP), although only seen in about one fifth of patients with the disease Whilst the relative high specificity for the aforementioned entity is preserved, the sign has also been described on standard resolution CT with the following pathologies:
opportunistic invasive fungal infections (IFI)
pulmonary mucormycosis (PM),
invasive pulmonary aspergillosis (IPA)
polyangiits with granulomatosis (Wegener's granulomatosis)
following radiation therapy and radiofrequency/microwave ablation of pulmonary malignancies
infarction(proved by biopsy)
Discussion (Related Text)
Reversed halo sign (RHS), also known as the atoll sign, is defined as central ground-glass opacity (GGO) surrounded by denser consolidation of crescentic (forming more than three fourths of a circle) or ring (forming a complete circle) shape of at least 2 mm in thickness.