This video discusses an example of an infiltrative pattern of basal cell carcinoma (BCC) in the dermis, characterized by thin cords of basaloid cells, described as "basaloid tadpoles." The speaker emphasizes the importance of recognizing this pattern, also known as morphiaform or sclerosing BCC. A key takeaway is the frequent presence of perineural invasion (PNI) in these cases, which often goes unnoticed but necessitates wider surgical margins and can lead to longer clearance times.
0:00 Infiltrative Basal Cell Carcinoma: The video focuses on an example of an "infiltrative thing" identified as basaloid cells ("tadpoles") within the dermis, indicative of an infiltrative basal cell carcinoma.
0:06 Morphiaform/Sclerosing Pattern: The speaker notes that this pattern is often described as "morphiaform" or "sclerosing," characterized by thin cords of basal cell carcinoma invading the dermis.
0:26 Recommended Terminology: The speaker suggests using the term "infiltrated pattern basal cell" to broadly encompass all infiltrative growth patterns, though "morphiaform" is also widely used.
0:37 Crucial Detail: Perineural Invasion (PNI): It is critical to look for perineural invasion (PNI) in these types of BCCs, as it is found regularly (couple of times a month) but often overlooked.
0:44 Clinical Significance of PNI: While PNI may not always require radiation, it typically necessitates wider surgical margins for clearance and can lead to longer clearance times, warranting a comment in the pathology report.