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Histiocytic sarcoma of the bile duct.

Abstract
An 80-year-old man was admitted with anorexia, a high fever and general icterus. Laboratory examinations revealed remarkable inflammation and elevation of liver/biliary enzymes. Computed tomography (CT) showed a high-density lesion in the bile duct, and endoscopic retrograde cholangiopancreatography (ERCP) disclosed an oval filling defect mimicking choledocholithiasis. Plastic stents were inserted to treat the acute cholangitis; however, the patient's symptoms recurred. An erythematous hypervascular mass obtained with a balloon catheter contained numerous pleomorphic histiocytic cells with eosinophilic cytoplasm, remarkable anisonucleosis and occasional mitoses. A diagnosis of histiocytic sarcoma (HS) was made based on the results of intensive immunohistochemistry. Monoclonal rearrangement of the IGH and TCRG genes, IGH split and IGH/BCL2 fusion was negative, although polysomy 8, 14, and 18 was detected. The patient was treated conservatively and died of the disease 20 months after the initial diagnosis. To the best of our knowledge, this is the first case of bile duct HS. This case, which involved numerical alterations of chromosomes, presented with CT and ERCP findings similar to those of choledocholithiasis.
AuthorsKatsuyuki Miyabe, Ayako Masaki, Takahiro Nakazawa, Tomoaki Ando, Kazuki Hayashi, Itaru Naitoh, Fumihiro Okumura, Shuya Shimizu, Hiromu Kondo, Michihiro Yoshida, Hiroaki Yamashita, Shuichiro Umemura, Yasuki Hori, Yan Ge, Hirotaka Ohara, Takashi Joh, Hiroshi Inagaki
JournalInternal medicine (Tokyo, Japan) (Intern Med) Vol. 53 Issue 7 Pg. 707-12 ( 2014) ISSN: 1349-7235 [Electronic] Japan
PMID24694481 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
Topics
  • Aged, 80 and over
  • Bile Duct Neoplasms (diagnosis, surgery)
  • Cholangiopancreatography, Endoscopic Retrograde (methods)
  • Common Bile Duct (diagnostic imaging, surgery)
  • Diagnosis, Differential
  • Histiocytic Sarcoma (diagnosis, surgery)
  • Humans
  • Male
  • Stents
  • Tomography, X-Ray Computed

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