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Case Reports
. 2015 Mar-Apr;16(2):440-3.
doi: 10.3348/kjr.2015.16.2.440. Epub 2015 Feb 27.

Single nodular opacity of granulomatous pneumocystis jirovecii pneumonia in an asymptomatic lymphoma patient

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Case Reports

Single nodular opacity of granulomatous pneumocystis jirovecii pneumonia in an asymptomatic lymphoma patient

Hyun Soo Kim et al. Korean J Radiol. 2015 Mar-Apr.

Abstract

The radiologic findings of a single nodule from Pneumocystis jirovecii pneumonia (PJP) have been rarely reported. We described a case of granulomatous PJP manifesting as a solitary pulmonary nodule with a halo sign in a 69-year-old woman with diffuse large B cell lymphoma during chemotherapy. The radiologic appearance of the patient suggested an infectious lesion such as angioinvasive pulmonary aspergillosis or lymphoma involvement of the lung; however, clinical manifestations were not compatible with the diseases. The nodule was confirmed as granulomatous PJP by video-assisted thoracoscopic surgery biopsy.

Keywords: Granulomatous Pneumocystis jirovecii pneumonia; Lymphoma; Nodular opacity.

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Figures

Fig. 1
Fig. 1. 69-year-old woman with granulomatous PJP.
Chest CT shows small subpleural nodule in right lower lobe (A) and shows high uptake on PET-CT (B). Follow-up CT taken 10 days later shows progression of nodule with peripheral ground glass opacity (C). Histopathologic features of granulomatous PJP show chronic granulomatous inflammation (white arrows) with foamy exudates (black arrowheads) (D, hematoxylin and eosin stain, × 400) and Pneumocystis cysts (white arrows) (E, Gomori methenamine silver stain, × 400). CT = computed tomography, PET-CT = positron emission tomography-computed tomography, PJP = Pneumocystis jirovecii pneumonia

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