Head and neck cytopathology: Difference between revisions
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[[Image:Pleomorphic adenoma - cytology -- high mag.jpg|right|thumb|[[Micrograph]] showing a pleomorphic adenoma. [[Pap stain]].]] | |||
'''Head and neck cytopathology''' is a small part of cytopathology. Non-cytopathology head & neck pathology is dealt with in the ''[[head and neck pathology]]'' article. | '''Head and neck cytopathology''' is a small part of cytopathology. Non-cytopathology head & neck pathology is dealt with in the ''[[head and neck pathology]]'' article. | ||
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*Mucoepidermoid carcinoma. | *Mucoepidermoid carcinoma. | ||
== | ==Crystals in salivary gland specimens== | ||
===General=== | ===General=== | ||
*Uncommon.<ref name=pmid33296146>{{cite journal |authors=Sun T, Faquin WC, Torous VF |title=Crystalloids in FNA specimens of salivary gland lesions: A retrospective study in a single large institute |journal=Cancer Cytopathol |volume=129 |issue=6 |pages=432–438 |date=June 2021 |pmid=33296146 |doi=10.1002/cncy.22395 |url=}}</ref> | *Uncommon in general. | ||
**Typical location is: parotid (>85% salivary gland specimens with crystals<ref name=pmid33296146>{{cite journal |authors=Sun T, Faquin WC, Torous VF |title=Crystalloids in FNA specimens of salivary gland lesions: A retrospective study in a single large institute |journal=Cancer Cytopathol |volume=129 |issue=6 |pages=432–438 |date=June 2021 |pmid=33296146 |doi=10.1002/cncy.22395 |url=}}</ref>). | |||
*May be seen in the context of any diagnostic category (non-diagnostic, benign, neoplastic, malignant). | |||
**Approximately 40% of cases with crystals are benign or non-diagnositic.<ref name=pmid33296146/> | |||
**Approximately 10% of cases with crystals are suspicious or malignant.<ref name=pmid33296146/> | |||
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*Tyrosine crystalloids: floret-like structures, refractile. | *Tyrosine crystalloids: floret-like structures, refractile. | ||
*Collagenous crystalloids: needle-shaped, radially arranged. | *Collagenous crystalloids: needle-shaped, radially arranged. | ||
====Images==== | |||
<gallery> | |||
Image: Amylase crystals - parotid -- intermed mag.jpg | Amylase crystals - parotid - intermed. mag. | |||
Image: Amylase crystals - parotid - alt -- intermed mag.jpg | Amylase crystals - parotid - intermed. mag. | |||
Image: Amylase crystals - parotid -- high mag.jpg | Amylase crystals - parotid - high mag. | |||
Image: Amylase crystals - parotid - alt -- high mag.jpg | Amylase crystals - parotid - high mag. | |||
Image: Amylase crystals - parotid -- very high mag.jpg | Amylase crystals - parotid - very high mag. | |||
Image: Amylase crystals - parotid - alt -- very high mag.jpg | Amylase crystals - parotid - very high mag. | |||
Image: Amylase crystals - parotid - alt2 -- very high mag.jpg | Amylase crystals - parotid - very high mag. | |||
Image: Amylase crystals - parotid -- high mag.gif | Amylase crystals - parotid - animation - high mag. | |||
Image: Amylase crystals - parotid -- very high mag.gif | Amylase crystals - parotid - animation - very high mag. | |||
</gallery> | |||
===Sign out=== | |||
<pre> | |||
Crystalloid material is present and has a rhomboid/polygonal shape with occasional "pointy" ends; this is in keeping with amylase crystals. | |||
</pre> | |||
==Pleomorphic adenoma== | ==Pleomorphic adenoma== | ||