Document Detail

Ciliated hepatic cyst without smooth muscle layer: a variant of ciliated hepatic foregut cyst?
MedLine Citation:
PMID:  16704499     Owner:  NLM     Status:  MEDLINE    
The ciliated hepatic foregut cyst (CHFC) is a rare lesion that may arise from remnants of the embryonic foregut. Its wall is lined by pseudostratified ciliated columnar epithelium, and is characterized by the presence of bundles of smooth muscle. Herein is presented two cases of ciliated hepatic cyst without smooth muscle layer. One case was an incidental autopsy finding, and the other was a surgically resected cystic lesion of the liver. Both cysts were <2.0 cm in diameter, and were located subcapusularly in the medial segment (S4) of the liver. The histological appearance of the two cases was identical. They had an epithelial lining of ciliated pseudostratified cells with occasional goblet cells, and lacked a smooth muscle layer, as shown by the actin immunostaining. The lining epithelium contained cells positive for immunohistochemical staining of surfactant apoprotein A, suggesting the embryonic foregut origin of the cysts and differentiation toward bronchiolar structures, rather than ciliated metaplasia of the epithelium of the simple (cholangiogenic) cyst. It is considered that ciliated hepatic cysts of the present case are a rare histological variant of CHFC where the smooth muscle layer is inconspicuous or absent.
Yasunori Sato; Satoshi Kitagawa; Yoh Zen; Hiroshi Minato; Yasuni Nakanuma
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pathology international     Volume:  56     ISSN:  1320-5463     ISO Abbreviation:  Pathol. Int.     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-05-17     Completed Date:  2006-08-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9431380     Medline TA:  Pathol Int     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  340-4     Citation Subset:  IM    
Department of Human Pathology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan.
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MeSH Terms
Biological Markers / metabolism
Cilia / pathology
Cysts / metabolism,  pathology*,  surgery
Liver Diseases / metabolism,  pathology*,  surgery
Muscle, Smooth / metabolism,  pathology*
Reg. No./Substance:
0/Biological Markers

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