Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2003 Aug;29(8):830-2; discussion 833.
doi: 10.1046/j.1524-4725.2003.29217.x.

Basosquamous carcinoma

Paul H Bowman  1 , John L Ratz, Theresa G Knoepp, Cheryl J Barnes, Eric M Finley
Affiliations

Basosquamous carcinoma

Paul H Bowman et al. Dermatol Surg. 2003 Aug.

Abstract

Background: Basosquamous carcinoma (BSC) is a rare cutaneous tumor that has been poorly described in the dermatologic literature. It has been depicted as an aggressive tumor with a high incidence of distant metastasis.

Objective: To examine the average extent of local tissue invasion and presence of distant metastases in cases of BSC compared with those of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC).

Methods: One thousand consecutive Mohs surgery cases performed between January 1993 and May 1995 at the Oschner Clinic in New Orleans, Louisiana, for histologically confirmed BCC, SCC, and BSC were reviewed. Each case was retrospectively evaluated for tumor type, anatomic location, number of Mohs stages performed, and presence of metastases at the time of surgery, as determined by chest radiograph.

Results: Seven hundred forty-five BCCs, 228 SCCs, and 27 BSCs (1,000 tumors total) were treated in 580 patients. The average number of stages required for clear margins in cases of BCC, SCC, and BSC was 1.62, 1.51, and 2.00, respectively. The prevalence of metastasis was 0.87% for SCC and 7.4% for BSC, which was statistically significant (P<0.001).

Conclusion: In this retrospective study, BSCs displayed tissue invasion similar to that of BCC or SCC but had a higher frequency of pulmonary metastasis than SCC.

PubMed Disclaimer