Characteristics of mixed type basal cell carcinoma in comparison to other BCC subtypes

• Main Authors: A Ghanadan (Author), A Abbasi (Author), M Rabet (Author), P Abdollahi (Author), M A Abbasi (Author)
• Format: Book
• Published: Wolters Kluwer Medknow Publications, 2014-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Background: There are limited data exploring the characteristics of mixed type basal cell carcinoma (BCC). Objectives: To explore different characteristics of mixed type BCC. Design: Cross sectional study. Materials and Methods: 825 patients with BCC enrolled in this study. Results: Among 825 patients, 512 (62%) were male. Three hundred and fifty five (43%) presented with nodular subtype, 267 (32.4%) with mixed subtype, 25 with superficial and the 178 remaining presented with other subtypes. Four hundred and eighty three (58.6%) of the lesions were on the face, 243 (29.5%) on scalp, 52 (6.3%) on ears, 20 (2.4%) on neck, 15 (1.8%) on trunk and 12 (1.4%) on extremities. Anatomic distribution of mixed type was as follows: 137 on face, (51.4%), 100 (37.3%) on scalp, 19 (7%) on ear, 6 (2.1%) on neck, 4 (1.5%) extremity and 1 (0.7%) on trunk, which the difference from non mixed types was statistically significant (P = 0.002). The mean diameter of the mixed types and non mixed type BCCs were significantly different (2.7 ± 2.1 cm vs. 2.2 ± 1.6 cm; P = 0.01. The prevalence of necrosis in mixed type BCC was two times higher than non mixed type BCCs (OR = 2.3, CI 95% 1.3-3.9, P = 0.001). The most frequent combined subtypes were nodular-infiltrative (P < 0.001). Conclusion: Mixed type BCC has differences with other BCC subtypes in anatomical distribution and tumor diameter. Indeed, mixed type BCCs are frequently composed of aggressive subtypes than nonaggressive subtypes.

Item Description

0019-5154
1998-3611
10.4103/0019-5154.123496