Respir Case Rep. 2013; 2(3): 112-116 | DOI: 10.5505/respircase.2013.80299

Reversed halo sign in hypersensitivity pneumonia: a diagnostic difficulty

Ruken Yüksekkaya¹, Fatih Çelikyay¹, Ayþe Yýlmaz², Handan Ýnönü², Doðan Köseoðlu³, Recep Sade^1
1Gaziosmanpasa University School Of Medicine Radiology Department, Tokat
²Gaziosmanpasa University School Of Medicine Chest Diseases Department, Tokat
³Gaziosmanpasa University School Of Medicine Pathology Department, Tokat

Herein is a case of histologically proven hypersensitivity pneumonia in a patient who presented initially with a focal, rounded area of ground glass opacity surrounded by a complete or nearly complete ring of consolidation known as reversed halo sign on high resolution computed tomography. To the best of our knowledge, this association has not been previously described.

Keywords: Reversed halo sign, hypersensitivity pneumonia, high resolution computed tomography

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Hipersensitivite Pnömonisinde Ters Halo Ýþareti: Tanýsal Güçlük

Ruken Yüksekkaya¹, Fatih Çelikyay¹, Ayþe Yýlmaz², Handan Ýnönü², Doðan Köseoðlu³, Recep Sade^1
1Gaziosmanpaþa Üniversitesi Týp Fakültesi Radyoloji Anabilim Dalý, Tokat
²Gaziosmanpaþa Üniversitesi Týp Fakültesi Göðüs Hastalýklarý Ve Tüberküloz Anabilim Dalý, Tokat
³Gaziosmanpaþa Üniversitesi Týp Fakültesi Patoloji Anabilim Dalý, Tokat

Burada yüksek çözünürlüklü bilgisayarlý tomografi incelemede tam ya da tama yakýn bir halkasal konsolidasyon alaný ile çevrelenmiþ buzlu cam alaný odaklarý yani ters halo iþareti þeklinde kendini gösteren ve histolojik olarak hipersensitivite pnömonisi almýþ bir olguyu sunduk. Hipersensitivite pnömonisi ve yüksek çözünürlüklü bilgisayarlý tomografide ters halo iþareti arasýndaki iliþki literaturde bu güne kadar tanýmlanmamýþtýr.

Anahtar Kelimeler: Ters halo iþareti, hipersensitivite pnömonisi, yüksek çözünürlüklü bilgisayarlý tomografi

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