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Definitions and Criteria for Specime
 

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Definitions and Criteria for Specimen Adequancy

                             ¢¦The Bethesda System¢¦


󰡒Satisfactory for evaluation indicates that the specimcn has all of the following.


Appropriate labeling and identifying information.

Relevant clinical information.

Adequate numbers of well-preserved and well-visualized squamous epithelial cells.

An adequate endocavieal/transformation zone component (from a patient with a

cervix).


Well-preserved and well-visualized squamous epithelial cells should cover more than l0% of the slide surface. An adequate endocervical/transformation zone component should consist, at a minimum, of two clusters of well-preserved endocervical glandular and/or squamous metaplastic cells, with each cluster composed of at least five cells. This definition applies to specimens from both pronenopausal and postmenpausal women with a cervix, except in the situation of marked atrophy in which metaplastic and endocervical cells often cannot be distinguished from parabasal-like cells. In cases of marked atrophic changes, the absence of an identifiable endocervical/transformation zone component does not affect the specimen adequacy categorization of a specimen otherwise determined to be 󰡒Satisfactory for evaluation.󰡓


 A specimen is "Unsatisfactory for evaluation..." if any of the following apply:

Lack of patient identification on the specimen and/or requisition form A slide that is broken and cannot be repaired.

 Scant squamous epithelial component (well-preserved and well-visualized squamous epithelial cells covering less than 10% of the slide surface).

 Obscuring blood,  inflammation, thick areas, poor fixation, air drying artifact, contaminant, etc.  that precludes interpretation of approximately 75% or more of the epithelial cells.


  The "Unsatisfactory..." designation indicates that the specimen is unreliable for the detection of cervical epithelial abnormalities.

  Specimen adequacy is evaluated in all cases.  However, any epithelial abnormality is of paramount importance and must be reported regardless of comprised specimen adequacy.  If abnormal cells are detected, the specimen is never categorized as " Unsatisfactory". Such cases may be considered "Satisfactory" or "Satisfactory but limited by..." based on the above criteria.




󰡒Satisfactory for evaluation but limited by . . .󰡓 indicates that the specimen provides useful information; however, interpretation may be compromised. A report of 󰡒Satisfactory for evaluation but limited by absence of endoccrvial/transformation zone component󰡓 does not necessarily require a repeat smear. Patient factors such as location of the transfomation zone, age, pregnancy, and previous therapy may limit the clinician's ability to obtain an endocervical sample. The ultimate determination of specimen adequacy rests with the clinician, who must correlate the findings described in the cytopathology report with clinical knowledge of the individual paitent



  A specimen is "Unsatisfactory for evaluation..." if any of the following apply:

Lack of patient identification on the specimen and/or requisition form A slide that is broken and cannot be repaired.

 Scant squamous epithelial component (well-preserved and well-visualized squamous epithelial cells covering less than 10% of the slide surface).

 Obscuring blood,  inflammation, thick areas, poor fixation, air drying artifact, contaminant, etc.  that precludes interpretation of approximately 75% or more of the epithelial cells.



  The "Unsatisfactory..." designation indicates that the specimen is unreliable for the detection of cervical epithelial abnormalities.

  Specimen adequacy is evaluated in all cases.  However, any epithelial abnormality is of paramount importance and must be reported regardless of comprised specimen adequacy.  If abnormal cells are detected, the specimen is never categorized as " Unsatisfactory". Such cases may be considered "Satisfactory" or "Satisfactory but limited by..." based on the above criteria.



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