Destructive granuloma derived from a liver cyst: a case report.
We herein report the case of an idiopathic liver cystic mass which aggressively infiltrated the thoraco-abdominal wall. A 74-year-old woman who had a huge cystic lesion in her right hepatic lobe was transferred to our hospital for further examinations. Imaging studies revealed a simple liver cyst, and the cytological findings of intracystic fluid were negative. She was followed up periodically by computed tomography (CT) scans. Seven years later, she complained of a prominence and dull pain in her right thoraco-abdominal region. CT revealed an enlargement of the cystic lesion and infiltration into the intercostal subcutaneous tissue. We suspected the development of a malignancy inside the liver cyst such as cystadenocarcinoma, and she therefore underwent surgery. A tumor extirpation was performed, including the chest wall, from the 7th to the 10th rib, as well as a right hepatic lobectomy. Pathologically, the lesion consisted of severe inflammatory change with epithelioid cell granuloma and bone destruction without any malignant neoplasm. No specific pathogens were evident based on further histological and molecular examinations. Therefore the lesion was diagnosed to be a destructive granuloma associated with a long-standing hepatic cyst. Since undergoing surgery, the patient has been doing well without any signs of recurrence.
Kawashita
Yujo
Y
Department of Transplantation and Digestive Surgery, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan. yujo-ngs@umin.ac.jp
Kamohara
Yukio
Y
Furui
Junichiro
J
Fujita
Fumihiko
F
Miyamoto
Shungo
S
Takatsuki
Mitsuhisa
M
Abe
Kuniko
K
Hayashi
Tomayoshi
T
Ohno
Yasuharu
Y
Kanematsu
Takashi
T
D034861:Abdominal Wall / Q000473:pathology; D000368:Aged; D003536:Cystadenocarcinoma / Q000175:diagnosis / Q000473:pathology; D003560:Cysts / Q000150:complications* / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006099:Granuloma / Q000175:diagnosis* / Q000209:etiology* / Q000601:surgery; D006498:Hepatectomy; D006801:Humans; D008107:Liver Diseases / Q000175:diagnosis* / Q000209:etiology* / Q000601:surgery; D008113:Liver Neoplasms / Q000175:diagnosis / Q000473:pathology; D014057:Tomography, X-Ray Computed