Checklist for the Reporting of Ductal Carcinoma In Situ



Checklist for the Reporting of Ductal Carcinoma In Situ












DCIS of Breast: Complete Excision (Less Than Total Mastectomy, Including Specimens Designated Biopsy, Lumpectomy, Quadrantectomy, and Partial Mastectomy; With or Without Axillary Contents) and Mastectomy (Total, Modified Radical, Radical; With or Without Axillary Contents)




























































































































































































































































































































































































































































































































































































































































































































































Surgical Pathology Cancer Case Summary (Checklist)


Specimen



____ Partial breast



____ Total breast (including nipple and skin)



____ Other (specify): _________________



____ Not specified


Procedure



____ Excision without wire-guided localization



____ Excision with wire-guided localization



____ Total mastectomy (including nipple and skin)



____ Other (specify): _________________



____ Not specified


Lymph Node Sampling (select all that apply)



____ No lymph nodes present



____ Sentinel lymph node(s)



____ Axillary dissection (partial or complete dissection)



____ Lymph nodes present within breast specimen (i.e., intramammary lymph nodes)



____ Other lymph nodes (e.g., supraclavicular or location not identified)




Specify location, if provided: ______________________


Specimen Integrity



____ Single intact specimen (margins can be evaluated)



____ Multiple designated specimens (e.g., main excisions and identified margins)



____ Fragmented (margins cannot be evaluated with certainty)



____ Other (specify): ________________________


Specimen Size (for excisions less than total mastectomy)



Greatest dimension: ________________ cm



*Additional dimensions: __________ × __________ cm



____ Cannot be determined


Specimen Laterality



____ Right



____ Left



____ Not specified


*Tumor Site (select all that apply)





*____ Upper outer quadrant



*____ Lower outer quadrant



*____ Upper inner quadrant



*____ Lower inner quadrant



*____ Central



*____ Nipple




*Position: ________ o’clock



*____ Other (specify): _________________



*____ Not specified


Size (Extent) of DCIS



Estimated size (extent) of DCIS (greatest dimension using gross and microscopic evaluation): At least__________ cm



*Additional dimensions __________ × __________ cm



*Number of blocks with DCIS:______________



*Number of blocks examined: __________




Note: Size (extent) of DCIS is an estimation of volume of breast tissue occupied by DCIS


Histologic Type



____ Ductal carcinoma in situ; classified as Tis (DCIS) or Tis (Paget)


*Architectural Patterns (select all that apply)



*____ Comedo



*____ Paget disease (DCIS involving nipple skin)



*____ Cribriform



*____ Micropapillary



*____ Papillary



*____ Solid



*____ Other (specify): ______________________


Nuclear Grade



____ Grade I (low)



____ Grade II (intermediate)



____ Grade III (high)


Necrosis



____ Not identified



____ Present, focal (small foci or single cell necrosis)



____ Present, central (expansive “comedo” necrosis)


Margins (select all that apply)



____ Margins cannot be assessed



____ Margin(s) uninvolved by DCIS




Distance from closest margin: __________ mm




*Specify margins:______________





*Distance from superior margin: __________ mm





*Distance from inferior margin: __________ mm





*Distance from medial margin: __________ mm





*Distance from lateral margin: __________ mm





*Distance from anterior margin: __________ mm





*Distance from posterior margin: __________ mm





*Distance from other specified margin: __________ mm





*Designation of margin: ________________________



____ Margin(s) positive for DCIS




*Specify which margin(s) and extent of involvement





*____ Superior margin






*____ Focal






*____ Minimal/moderate






*____ Extensive





*____ Inferior margin






*____ Focal






*____ Minimal/moderate






*____ Extensive





*____ Anterior margin






*____ Focal






*____ Minimal/moderate






*____ Extensive





*____ Posterior margin






*____ Focal






*____ Minimal/moderate






*____ Extensive





*____ Medial margin






*____ Focal






*____ Minimal/moderate






*____ Extensive





*____ Lateral margin






*____ Focal






*____ Minimal/moderate






*____ Extensive


*Treatment Effect: Response to Presurgical (Neoadjuvant) Therapy



*____ No known presurgical therapy



*____ No definite response to presurgical therapy



*____ Probable or definite response to presurgical therapy


Lymph Nodes (required only if lymph nodes are present in specimen)



Number of sentinel nodes examined: __________



Total number of nodes examined (sentinel and nonsentinel): __________



Number of lymph nodes with macrometastases (> 0.2 cm): __________



Number of lymph nodes with micrometastases (> 0.2 mm to 0.2 cm &/or > 200 cells): __________



Number of lymph nodes with isolated tumor cells (≤ 0.2 mm and ≤ 200 cells): __________



Size of largest metastatic deposit (if present): __________



*Extranodal extension




*____ Present




*____ Not identified




*____ Indeterminate



*Method of evaluation of sentinel lymph nodes (select all that apply)




*____ Hematoxylin and eosin (H&E), 1 level




*____ H&E, multiple levels




*____ Immunohistochemistry




*____ Sentinel lymph node biopsy not performed




*____ Other (specify): ______________________________





Note: Sentinel node is usually the first involved lymph node. In the unusual situation in which a sentinel node is not involved by metastatic carcinoma but a nonsentinel node is involved, this information should be included in a note


Pathologic Staging (pTNM)



TNM descriptors (required only if applicable) (select all that apply)




____ r (recurrent)




____ y (post-treatment)



Primary tumor (pT)




____ pTis (DCIS): Ductal carcinoma in situ




____ pTis (Paget): Paget disease of nipple not associated with invasive carcinoma &/or carcinoma in situ (DCIS & or LCIS) in underlying breast parenchyma





Note: If there has been a prior core needle biopsy, the pathologic findings from the core, if available, should be incorporated in the T classification. If invasive carcinoma or microinvasion were present on core, protocol for invasive carcinomas of breast should be used and should incorporate this information



Regional lymph nodes (pN) (choose a category based on lymph nodes received with specimen; immunohistochemistry &/or molecular studies are not required)





Note: If internal mammary lymph nodes, infraclavicular nodes, or supraclavicular lymph nodes are included in the specimen, consult the AJCC Staging Manual for additional lymph node categories.




Modifier (required only if applicable)




____ (sn) Only sentinel node(s) evaluated; if ≥ 6 sentinel nodes &/or nonsentinel nodes are removed, this modifier should not be used Category (pN)




____ pNX: Regional lymph nodes cannot be assessed (e.g., previously removed, or not removed for pathologic study)




____ pN0: No regional lymph node metastasis identified histologically





Note: Isolated tumor cell clusters (ITC) are defined as small clusters of cells ≤ 0.2 mm or single tumor cells, or a cluster of < 200 cells in a single histologic cross-section.† ITCs may be detected by routine histology or by immunohistochemical (IHC) methods. Nodes containing only ITCs are excluded from total positive node count for purposes of N classification but should be included in total number of nodes evaluated.




____ pN0(i-): No regional lymph node metastases histologically, negative IHC




____ pN0(i+): Malignant cells in regional lymph node(s) ≤ 0.2 mm and ≤ 200 cells (detected by H&E or IHC including ITC)




____ pN0(mol-): No regional lymph node metastases histologically, negative molecular findings (reverse transcriptase polymerase chain reaction [RT-PCR])




____ pN0(mol+): Positive molecular findings (RT-PCR), but no regional lymph node metastases detected by histology or IHC




____ pN1mi: Micrometastases (> 0.2 mm &/or > 200 cells, but none > 2.0 mm)




____ pN1a: Metastases in 1-3 axillary lymph nodes, at least 1 metastasis > 2.0 mm




____ pN2a: Metastases in 4-9 axillary lymph nodes (at least 1 tumor deposit > 2.0 mm)




____ pN3a: Metastases in 10 or more axillary lymph nodes (at least 1 tumor deposit > 2.0 mm)



Distant metastasis (M)




____ Not applicable




____ cM0(i+): No clinical or radiographic evidence of distant metastasis, but deposits of molecularly or microscopically detected tumor cells in circulating blood, bone marrow, or other nonregional nodal tissue that are no larger than 0.2 mm in a patient without symptoms or signs of metastasis




____ pM1: Distant detectable metastasis as determined by classic clinical and radiographic means &/or histologically proven larger than 0.2 mm





Note: Presence of distant metastases in a case of DCIS would be very unusual. Additional sampling to identify invasive carcinoma in breast or additional history to document prior or synchronous invasive carcinoma is advised in evaluation of such cases


*Additional Pathologic Findings



*Specify: ______________________________


*Ancillary Studies



*Estrogen receptor (results of special studies performed on this specimen or a prior core needle biopsy)




*____ Immunoreactive tumor cells present




*____ No immunoreactive tumor cells present




*____ Pending




*____ Not performed




*____ Other (specify): _________________





*Name of antibody: _____________________





*Name of vendor: _____________________





*Type of fixative: _________________



*Progesterone receptor (results of special studies performed on this specimen or a prior core biopsy)




*____ Immunoreactive tumor cells present




*____ No immunoreactive tumor cells present




*____ Pending




*____ Not performed




*____ Other (specify): _________________





*Name of antibody: __________________





*Name of vendor: __________________





*Type of fixative: ______________


*Microcalcifications (select all that apply)



*____ Not identified



*____ Present in DCIS



*____ Present in nonneoplastic tissue



*____ Present in both DCIS and nonneoplastic tissue


*Clinical History (select all that apply)



Current clinical/radiologic breast findings for which this surgery is performed include




*____ Palpable mass




*____ Radiologic finding





*____ Mass or architectural distortion





*____ Calcifications





*____ Other (specify): ________________




*____ Nipple discharge




*____ Other (specify): ____________________




*____ Prior history of beast cancer





*Specify site, diagnosis, and prior treatment: ________________




*____ Prior neoadjuvant treatment for this diagnosis of DCIS





*Specify type: ________________________


* Data elements with asterisks are not required. However, these elements may be clinically important but are not yet validated or regularly used in patient management.Approximately 1,000 tumor cells are contained in a 3-dimensional 0.2 mm cluster. Thus, if > 200 individual tumor cells are identified as single dispersed tumor cells or as a nearly confluent elliptical or spherical focus in a single histologic section of a lymph node, there is a high probability that > 1,000 cells are present in the lymph node. In these situations, the node should be classified as containing a micrometastasis (pN1mi). Cells in different lymph node cross-sections or longitudinal sections or levels of the block are not added together; the 200 cells must be in a single node profile even if the node has been thinly sectioned into multiple slices. It is recognized that there is substantial overlap between the upper limit of the ITC and the lower limit of the micrometastasis categories due to inherent limitations in pathologic nodal evaluation and detection of minimal tumor burden in lymph nodes. Thus, the threshold of 200 cells in a single cross-section is a guideline to help pathologists distinguish between these 2 categories. The pathologist should use judgment regarding whether it is likely that the cluster of cells represents a true micrometastasis or is simply a small group of isolated tumor cells. Adapted with permission from College of American Pathologists, “Protocol for the Examination of Specimens from Patients with Ductal Carcinoma In Situ (DCIS) of the Breast.” Web posting date October 2009, www.cap.org.

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Jul 6, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Checklist for the Reporting of Ductal Carcinoma In Situ

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