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Disseminated mucormycosis with myocardial involvement in a renal transplant recipient

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S-327

Disseminated mucormycosis with myocardial involvement in a renal transplant recipient

1Department of Internal Medicine, College of Medicine, The Catholic University of Korea; 2Division of Nephrology, Department of Internal Medicine, Incheon St. Mary’s Hospital

*Yunju Nam1, Sung Jun Kim1,2, Seok Joon Shin1,2, Hye Eun Yoon1,2

Invasive fungal infections (IFI) are an important cause of morbidity and mortality in organ transplant recipients. The incidence of IFI has increased in renal transplant recipients due to the intensive immunosuppressive regimens to deal with rejection. Herewe report a renal transplant recipient with dis- seminated mucormycosis accompanying myocardial abscess. A 45-year-old female renal transplant recipient was admitted due to creatinine elevation at 16 months post-renal transplantation. Allograft biopsy showed chronic antibody-mediated and acute cellular rejection. Serum creatinine decreased using immunosuppressants, But cytomegalovirus (CMV) infection developed and ganciclovir was administered. During treatment, pleuritic pain with fever occurred. Computed tomography (CT) of the chest showed cavitary lesions, we started antifungal agent immediately. Nevertheless, paralytic ileus de- veloped and abdomen CT showed peri-allograft hematoma, splenic abscess. Lung tissue showed broad, ribbon-like, aseptated hyphae in the alveoli.

Follow-up chest CT showed pericardial abscess around the left ventricle (LV) and partial blurring of the border between abscess and LV wall.

Echocardiography showed diffuse wall thickening of LV with pericardial adhesion and echo-free space in LV basolateral wall. Because of the diffuse infiltration of the abscess in LV wall, we could not drain the myocardial abscess. Two days later, she died from sudden cardiac arrest. Risk factors of mucormycosis are the use of steroids, solid organ transplantation, hematological malignancy and diabetes mellitus. In this report, the patient had re- ceived anti-rejection therapy and had developed CMV infection, both of which might have made the patient more susceptible to IFI. Recently it was re- ported that the riskfactors associated with IFI in renal transplant recipients are recent antibiotic treatment and CMV infection. In conclusion, this case demonstrates an unusual manifestation of disseminated mucormycosis involving the myocardium. In an immunocompromised patient who is suspected to have or is diagnosed with mucormycosis, cardiac evaluation should be considered early in the course of treatment, because its delayed diagnosis may result in a fatal outcome.

S-328

고혈압신경화에 동반한 C1q 신장병에서 스테로이드 치료로 완전관해된 1례

한양대학교 구리병원 내과학교실1, 한양대학교 의과대학 병리과학교실2

*이은영1, 이주학 1, 장기석2, 한상웅1

서론: C1q 신장병은 면역형광염색에서 메산지움에 C1q가 침착되고 전신성 홍반성 낭창의 증거가 없는 드문 사구체 신염으로 국내에서는 2005년 이후 성인 에서 총 14 례가 보고되었으며, 모두 미세변화병 또는 국소분절사구체경화증으로 발현된 C1q 신장병이었다. 증례: 45세 남자환자가 단백뇨를 주소로 내원하 였다. 5년 전부터 고혈압과 단백뇨가 있었으나, 치료하지 않았다. 혈압은 160/80 mmHg, 혈청 BUN/Cr 28/2.1 mg/dL, 일반요검사에서 요알부민(3+), 요단 백/크레아티닌비 1.7 g/g, 항핵항체 및 보체검사는 정상이었으며, 복부초음파에서 콩팥크기는 우측: 9.4 cm, 좌측: 9.5 cm이었다. 고혈압신경화를 의심하고 시 행한 조직검사에서 광범위한 사구체경화와 세뇨관 위축, 사이질 섬유화 및 세동맥 경화소견이 있어 고혈압신경화에 합당하였지만, 면역형광염색에서 사구체 메산지움에 약한 C1q의 침착이 관찰되었고, 전자현미경에서 사구체 메산지움에 전자 고밀도 침착이 관찰되어, C1q 신병증에 합당한 소견 이었다. 고혈압신경 화에 동반된 Cq1 신장병으로 진단하고 안지오텐신 수용체 차단제와 스테로이드 치료를 시작하였다. 스테로이드(프레드니솔론 1 mg/kg/day) 치료 6주 후에 일반요검사에서 요알부민(1+)으로 감소하여 스테로이드 용량 감량하였다. 치료 3개월 후, 일반요검사에서 요알부민(-), 요단백/크레아티닌비 285 mg/g으로 완전관해에 도달하였고, 혈청 BUN/Cr은 30/2.2 mg/dL로 유지되었다. 결론: C1q 신장병은 예후가 나쁘지 않다고, 알려져 있으며, 단백뇨가 0.3 g/day 이하 또는 일반요검사에서 요알부민이(1+) 이하로 감소된 경우를 완전관해로 정의하였을 때, 국내에 보고된 성인 14명 중 면역억제 치료를 한 9명중에 4명에서 완 전관해, 4명에서 부분관해를 보였다. 그러나 임상적으로 고혈압신경화가 의심되는 환자에서 적극적인 조직검사보다는 혈압조절 등의 보존적인 치료를 하며 경과관찰을 하는 경우가 많은데, 본 증례는 국내 처음으로 적극적인 신장조직검사를 통해 고혈압신경화에 동반된 C1q 신장병을 진단 및 면역억제 치료 후, 완 전관해에 도달하여 보고하는 바이다.

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