We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Correspondence and Brief Communications |

Why Fine-Needle Aspiration Cytology Is Not an Adequate Diagnostic Method for Liver Hydatid Cyst—Reply

Michael Safioleas, MD; Constantine Safioleas, MD; Evangelos P. Misiakos, MD
Arch Surg. 2007;142(7):690-691. doi:10.1001/archsurg.142.7.690-b.
Text Size: A A A
Published online


In reply

Imaging techniques such as ultrasonography and computed tomography are not always sufficient to diagnose parasitic cysts of internal organs. Fine-needle aspiration cytology has been used as a diagnostic tool for human echinococcosis since the late 1980s.1,2 This technique is usually performed under ultrasound guidance and is useful in the preoperative diagnosis of hydatid disease by showing the diagnostic hooklets and scolices in the aspiration fluid, which are pathognomonic for the cestode Echinococcus granulosus.3 Even in the absence of protoscolices and hooklets, laminated fragments suggestive of a laminated layer are usually identified on smears, indicating a possible diagnosis of hydatid disease.4 Fine-needle aspiration cytology is usually combined with tissue biopsy of the cyst wall, which may unequivocally establish the diagnosis.5 Das et al3 used FNAC for diagnosis of hydatid disease in 8 cases with cysts located in the abdomen or thorax. Fine-needle aspiration cytology was diagnostic for hydatid disease in 5 cases. For the remaining 3 cases, it was suggestive for hydatid disease since laminated cyst wall yielding a positive reaction was found with periodic acid–Schiff stain. Sinan et al6 have applied ultrasound imaging for the diagnosis of abdominal hydatid disease. With ultrasound examination, diagnosis of hydatid disease was established in 80% of cases (44 of 55). For the remaining 11 cases, they used ultrasound-guided FNAC, which established the correct diagnosis in all cases without causing any complications.

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.

Articles Related By Topic
Related Collections