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The development is described in a paper by Maung.<ref name=pmid15762279>{{Cite journal | last1 = Maung | first1 = RT. | title = What is the best indicator to determine anatomic pathology workload? Canadian experience. | journal = Am J Clin Pathol | volume = 123 | issue = 1 | pages = 45-55 | month = Jan | year = 2005 | doi = | PMID = 15762279 }}</ref> It has since been revised and is comprehensive with regard to academic practice and community practice.<ref>URL: [https://www.cap-acp.org/wkload.php https://www.cap-acp.org/wkload.php]. Accessed on: 14 July 2017.</ref> | The development is described in a paper by Maung.<ref name=pmid15762279>{{Cite journal | last1 = Maung | first1 = RT. | title = What is the best indicator to determine anatomic pathology workload? Canadian experience. | journal = Am J Clin Pathol | volume = 123 | issue = 1 | pages = 45-55 | month = Jan | year = 2005 | doi = | PMID = 15762279 }}</ref> It has since been revised and is comprehensive with regard to academic practice and community practice.<ref>URL: [https://www.cap-acp.org/wkload.php https://www.cap-acp.org/wkload.php]. Accessed on: 14 July 2017.</ref> | ||
==Revised L4E of 2014== | |||
===Surgical pathology & cytopathology=== | |||
L4E units for surgical pathology adapted from Maung:<ref name=Can_J_Pathol_2010_2_8-19/> | |||
{| class="wikitable sortable" | |||
! Code | |||
! L4E units | |||
! Description | |||
! Details | |||
|- | |||
| L1 | |||
| 0.15 | |||
| gross only specimens | |||
| itemized in the "specimen list and codes" | |||
|- | |||
| L2 | |||
| 0.333 | |||
| confirmation of normal | |||
| must include histology | |||
|- | |||
| L3 | |||
| 0.5 | |||
| small biopsies | |||
| includes most skin, cysts, GI tract specimens, small benign specimens | |||
|- | |||
| L4 | |||
| 1 | |||
| biopsies - most internal organs | |||
| detailed in rules 1, 2 and 3 | |||
|- | |||
| L5 | |||
| 5 | |||
| complex biopsies - includes medical and transplant biopsies, explant organs | |||
| | |||
|- | |||
| L6 | |||
| 10 | |||
| radical resections for malignancy | |||
| detailed in rule 9 | |||
|- | |||
| C1 | |||
| 1 | |||
| simple (exfoliative) cytology | |||
| pap test, urine, sputum, fluids (peritoneal, pleural) | |||
|- | |||
| C2 | |||
| 2 | |||
| complex cytology | |||
| FNAs, brushes, washes | |||
|- | |||
|} | |||
===All other cases=== | |||
{| class="wikitable sortable" | |||
! L4E units | |||
! Description | |||
! Details | |||
|- | |||
| L2/block | |||
| non-radical and benign resections, non-biopsy/non-L6 cases | |||
| detailed by rule 4, e.g. 10 blocks = 10 x L2; 10 x L2 = 3.33 L4Es | |||
|} | |||
==Details of the original L4E system== | ==Details of the original L4E system== |
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