Type of Article:  Original Research

Volume 5; Issue 2.1 (April 2017)

Page No.: 3672-3675

DOI: https://dx.doi.org/10.16965/ijar.2017.136


K. Sangameswaran *1, M. Rohini devi 2.

*1 Assistant Professor, Department of Anatomy, Coimbatore Medical College, Coimbatore, Tamilnadu, India.

 2  Associate Professor, Department of Anatomy, Coimbatore Medical College, Coimbatore, Tamilnadu, India.

Address for  Correspondence:  Dr.K. Sangameswaran. M.S ,  Assistant professor, Department of Anatomy, Coimbatore Medical College, Coimbatore, Tamilnadu, India. E-Mail:  drsangames@gmail.com                                   


Background: Ligation of cystic artery is a procedural prerequisite during any surgical   procedure    involving    gallbladder. In some cases, right  hepatic  artery    may   come   very  close   to   gallbladder  &  cystic  duct   in the   form   of   “Caterpillar hump   or   Moynihan hump’’.  If   such a   hump is present, the cystic artery inturn is very short. In  this   situation   right  hepatic  artery   is   liable  to  be   mistakenly   identified   as   cystic artery   and   it  will  be  ligated   prior  to  Cholecystectomy .  So , right functional lobe  of  liver  goes  for  necrosis.

Materials  and  Methods: 60  adult specimens   from   cadavers   were   studied   by   using   conventional  dissection method   in  institute of anatomy, Madras  Medical  college, Chennai, Tamilnadu, India. While age and sex were not  determined .

Results:  Caterpillar  hump ( Moynihan hump )  of   right hepatic artery   was   present   in   2  specimens (3.33 %) in my study.

Conclusion: The responsibility for teaching the arterial variations to surgeons  lies  with the anatomists. So  the surgeons  can  able  to  identify  this  arterial variation  during  their  cholecystectomy surgeries . If  this  caterpillar hump  of  right hepatic artery  is  present ,  the surgeons  should  locate  the origin  of  cystic artery   to  avoid   any  unnecessary  confusion  between  cystic artery  and  right hepatic  artery   for  preventing   unnecessary  damage  to  the right hepatic artery .

Key words: Caterpillar hump or Moynihan hump, Right hepatic artery, Cystic artery, Cholecystectomy.


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Cite this article: K. Sangameswaran, M. Rohini devi. SURGICAL IMPORTANCE OF CATERPILLAR (MOYNIHAN) HUMP OF RIGHT HEPATIC ARTERY. Int J Anat Res 2017;5(2.1):3672-3675. DOI: 10.16965/ijar.2017.136