An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 11/26/2024 1:37 PM
Question 20210035
Inquiry Details
References:
Subject matter expert
Question:
Update to current manual/Lymphovacular invasion--Thyroid: Are psammoma bodies only recorded as vascular invasion in papillary thyroid cancer cases? See Discussion.
Discussion:
For example, total thyroidectomy specimen shows right lobe papillary thyroid carcinoma, 4.2 cm, unencapsulated, with numerous psammoma bodies in non-tumoral thyroid parenchyma, without angioinvasion; left lobe with papillary thyroid carcinoma, 0.6 cm, encapsulated, with capsular invasion, with intralymphatic psammoma bodies in non-tumoral thyroid parenchyma, without angioinvasion. The synoptic summary documents vascular invasion present (psammoma bodies only).
Answer:
If you are collecting lymphovascular invasion (LVI) for thyroid cases, record "vascular invasion present (psammoma bodies only)" as vascular invasion (code 1, Lymphovascular Invasion Present/Identified) in the LVI data item. Use a text field to specify that this is vascular invasion by psammoma bodies.
