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| Image = Mammary analogue secretory carcinoma (H&E, medium power).jpg | | Image = Mammary analogue secretory carcinoma (H&E, medium power).jpg | ||
| Width = | | Width = | ||
| Caption = | | Caption = Secretory carcinoma of the salivary gland. [[H&E stain]]. (WC/NormanDy) | ||
| Synonyms = | | Synonyms = Mammary analogue secretory carcinoma (previous name) | ||
| Micro = large cells with abundant cytoplasm, small nuclei, +/-lymphocytic infiltrate, solid and microcystic growth pattern | | Micro = large cells with abundant cytoplasm, small nuclei, +/-lymphocytic infiltrate, solid and microcystic growth pattern | ||
| Subtypes = | | Subtypes = | ||
| LMDDx = [[acinic cell carcinoma]], [[mucoepidermoid carcinoma]] | | LMDDx = [[acinic cell carcinoma]], [[mucoepidermoid carcinoma]] | ||
| Stains = [[PAS stain|PAS]] +ve | | Stains = [[PAS stain|PAS]] +ve | ||
| IHC = S-100 +ve, | | IHC = S-100 +ve, mammaglobin +ve, vimentin +ve | ||
| EM = | | EM = | ||
| Molecular = ETV6-NTRK3 fusion gene | | Molecular = ETV6-[[NTRK3]] fusion gene | ||
| IF = | | IF = | ||
| Gross = | | Gross = | ||
Line 28: | Line 28: | ||
| Other = | | Other = | ||
| ClinDDx = other [[salivary gland]] tumours | | ClinDDx = other [[salivary gland]] tumours | ||
| Tx = | | Tx = excision | ||
}} | }} | ||
''' | '''Secretory carcinoma of the salivary gland''' is an uncommon [[malignant]] [[salivary gland]] tumour that was first described in 2010.<ref name=pmid22127547>{{Cite journal | last1 = Lei | first1 = Y. | last2 = Chiosea | first2 = SI. | title = Re-evaluating historic cohort of salivary acinic cell carcinoma with new diagnostic tools. | journal = Head Neck Pathol | volume = 6 | issue = 2 | pages = 166-70 | month = Jun | year = 2012 | doi = 10.1007/s12105-011-0312-9 | PMID = 22127547 }}</ref> | ||
It was previously known as '''mammary analogue secretory carcinoma''', abbreviated '''MASC'''.<ref name=pmid31007960>{{cite journal |authors=Montalvo N, Galarza D, Redrobán L |title=Secretory Carcinoma of the Parotid: Making the Correct Diagnosis of a Rare Salivary Gland Carcinoma When Molecular Biology Testing Is Not Available |journal=Case Rep Pathol |volume=2019 |issue= |pages=5103496 |date=2019 |pmid=31007960 |pmc=6441535 |doi=10.1155/2019/5103496 |url=}}</ref> | |||
==General== | ==General== | ||
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*+/-Lymphocytic infiltrate. | *+/-Lymphocytic infiltrate. | ||
*Solid and microcystic growth pattern. | *Solid and microcystic growth pattern. | ||
*+/-Cystic changes lined by hobnail cells - useful feature. | |||
DDx: | DDx: | ||
Line 55: | Line 58: | ||
===Images=== | ===Images=== | ||
====Case 1==== | |||
<gallery> | <gallery> | ||
Image:Mammary_analogue_secretory_carcinoma_(H%26E,_low_power).jpg | | Image:Mammary_analogue_secretory_carcinoma_(H%26E,_low_power).jpg | SC - low. (WC/NormanDy) | ||
Image:Mammary_analogue_secretory_carcinoma_(H%26E,_medium_power).jpg | | Image:Mammary_analogue_secretory_carcinoma_(H%26E,_medium_power).jpg | SC - med. (WC/NormanDy) | ||
Image:Mammary_analogue_secretory_carcinoma_(H%26E,_high_power).jpg | | Image:Mammary_analogue_secretory_carcinoma_(H%26E,_high_power).jpg | SC - high. (WC/NormanDy) | ||
Image:Mammary_analogue_secretory_carcinoma_(H%26E,_high_power),_solid.jpg | | Image:Mammary_analogue_secretory_carcinoma_(H%26E,_high_power),_solid.jpg | SC - high solid. (WC/NormanDy) | ||
</gallery> | </gallery> | ||
www | ====Case 2==== | ||
<gallery> | |||
Image: Secretory carcinoma of salivary gland -- low mag.jpg | SCSG - low mag. (WC) | |||
Image: Secretory carcinoma of salivary gland -- intermed mag.jpg | SCSG - intermed. mag. (WC) | |||
Image: Secretory carcinoma of salivary gland -- high mag.jpg | SCSG - high mag. (WC) | |||
Image: Secretory carcinoma of salivary gland - alt -- high mag.jpg | SCSG - high mag. (WC) | |||
</gallery> | |||
====www==== | |||
*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3370021/figure/Fig2/ MASC (nih.gov)].<ref name=pmid22127547/> | *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3370021/figure/Fig2/ MASC (nih.gov)].<ref name=pmid22127547/> | ||
*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3370021/figure/Fig1/ AcCC - the main DDx of MASC (nih.gov)].<ref name=pmid22127547/> | *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3370021/figure/Fig1/ AcCC - the main DDx of MASC (nih.gov)].<ref name=pmid22127547/> | ||
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==IHC== | ==IHC== | ||
Features:<ref name=pmid20410810/> | Features:<ref name=pmid20410810/> | ||
*S-100 +ve.<ref name=pmid22127547/> | *[[S-100]] +ve.<ref name=pmid22127547/> | ||
* | *Mammaglobin +ve. | ||
*Vimentin +ve. | *Vimentin +ve. | ||
Others: | Others: | ||
*p63 -ve. | *[[p63]] -ve. | ||
**Unusual in mucoepidermoid carcinoma. | |||
*HMWCK -ve. | *HMWCK -ve. | ||
*GATA3 +ve. | *[[GATA3]] +ve. | ||
Panel: | Panel: | ||
*S-100, | *S-100, mammaglobin, p63, HMWCK. | ||
===Images=== | ===Images=== | ||
<gallery> | <gallery> | ||
Image:Mammary_analogue_secretory_carcinoma_(mammaglobin_immunohistochemstry,_medium_power).jpg | MASC - | Image:Mammary_analogue_secretory_carcinoma_(mammaglobin_immunohistochemstry,_medium_power).jpg | MASC - mammaglobin. (WC/NormanDy) | ||
Image:Mammary_analogue_secretory_carcinoma_(S100immunohistochemstry,_low_power).jpg | MASC - S-100. (WC/NormanDy) | Image:Mammary_analogue_secretory_carcinoma_(S100immunohistochemstry,_low_power).jpg | MASC - S-100. (WC/NormanDy) | ||
</gallery> | </gallery> | ||
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==Molecular== | ==Molecular== | ||
*t(12;15)(p13;q25). | *t(12;15)(p13;q25). | ||
**Fusion of the genes ''ETV6'' and ''NTRK3''.<ref name=pmid22127547/> | **Fusion of the genes ''ETV6'' and ''[[NTRK3]]''.<ref name=pmid22127547/> | ||
Note: | Note: | ||
*The translocation seen in [[secretory breast carcinoma]], [[congenital-infantile fibrosarcoma]] and [[mesoblastic nephroma]]. | *The translocation seen in [[secretory breast carcinoma]], [[congenital-infantile fibrosarcoma]] and [[mesoblastic nephroma]]. | ||
==Sign out== | |||
<pre> | |||
Right Parotid Lesion, Core Biopsy: | |||
- SECRETORY CARCINOMA of the salivary gland, see comment. | |||
Comment: | |||
Secretory carcinoma of the salivary gland was previously known as "mammary analogue secretory carcinoma" (MASC). | |||
The tumour stains as follows: | |||
POSITIVE: CK7 (strong, diffuse), mammaglobin (strong, diffuse), S100 (moderate, patchy), mucin (focal). | |||
NEGATIVE: p63. | |||
NTRK testing was ordered; the results will be reported in an addendum. | |||
</pre> | |||
===Micro=== | |||
The sections show a cohesive tumor with moderate amphophilic cytoplasm and vacuolation. The vacuolation is focally prominent. Nucleoli are inconspicuous. Poorly formed glands are present. Keratinization is absent. | |||
==See also== | ==See also== | ||
*[[Salivary gland]]. | *[[Salivary gland]]. | ||
*[[Secretory breast carcinoma]]. | *[[Secretory breast carcinoma]]. | ||
*[[Secretory carcinoma]]. | |||
==References== | ==References== |
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