CEN Case Reports

, Volume 7, Issue 1, pp 107–109 | Cite as

Recurrent infectious subcapsular renal hematoma accompanied by microaneurysm

  • Toshikazu Ozeki
  • Junichiro Yamamoto
  • Shigeki Yamamoto
  • Chisato Shigematsu
  • Masashi Tsuji
Case Report


An 80-year-old woman was admitted to the hospital complaining of loss of appetite. 10 days earlier, her oral intake gradually decreased with no other specific symptoms, such as abdominal pain, nausea, vomiting, headache, or low back pain. Abdominal computed tomography (CT) scan revealed a left subcapsular renal hematoma. We suspected infective subcapsular renal hematoma, so percutaneous needle aspiration and drainage were performed. Intravenous sulbactam–ampicillin was started immediately. On day 9 after admission, repeat CT scan revealed the subcapsular hematoma had reduced in size. The drain was removed, and intravenous antibiotics were discontinued. Follow-up CT scan on day 21 revealed increased subcapsular renal hematoma size. The patient also had high fever. Suspecting recurrence of infective subcapsular renal hematoma, we repeated the drainage of the hematoma and restarted intravenous antibiotics. Renal arteriography showed a renal artery microaneurysm and her condition improved with renal artery embolization. Renal arteriography was useful for detecting renal artery microaneurysm in infective subcapsular renal hematoma that did not resolve after antibiotic treatment and drainage.


Hematoma Kidney diseases Renal Embolization 




Compliance with ethical standards

Conflict of interest

All the authors have declared no competing interests.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from the patient.


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Copyright information

© Japanese Society of Nephrology 2018

Authors and Affiliations

  1. 1.Department of NephrologyTsushima City HospitalTsushimaJapan
  2. 2.Department of NephrologyNagoya University Graduate School of MedicineNagoyaJapan
  3. 3.Department of UrologyTsushima City HospitalTsushimaJapan

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