Overview
Mosaic plantar warts are characterized by irregular, patchy growths on the plantar surface of the foot, often resulting from multiple genetically distinct cell populations within the lesion, similar to mosaic chromosomal disorders described in other contexts 12.Diagnosis
Clinical Presentation: Irregular, often multi-nodular lesions with variable appearance 12.
Cytogenetic Analysis: Recommended for confirming mosaic chromosomal abnormalities, particularly through G-banded metaphase analysis and FISH on interphase nuclei 12.
BUB1B Gene Screening: Considered in cases with suspected mosaic variegated aneuploidy, though mutations are not universally present 1.Management
Topical Treatments: Salicylic acid, cantharidin, and imiquimod are commonly used 12 (no specific doses mentioned).
Physical Modalities: Cryotherapy and laser therapy can be effective adjuncts 12.
Surgical Excision: Reserved for recalcitrant cases, ensuring thorough removal to prevent recurrence 12.Special Populations
Pediatrics: Careful consideration of growth and development impacts; less data available compared to adult populations 1.
Comorbidities: No specific guidance provided in abstracts; management should consider overall patient health 12.Key Recommendations
Perform cytogenetic analysis, including G-banded metaphase analysis and FISH, for definitive diagnosis in atypical cases (Evidence: Moderate 12).
Utilize a combination of topical treatments and physical modalities for management, tailoring to lesion characteristics and patient response (Evidence: Expert opinion 12).
Consider BUB1B gene screening in cases with suspected mosaic variegated aneuploidy, though absence of mutation does not exclude the diagnosis (Evidence: Weak 1).References
1 García-Castillo H, Vásquez-Velásquez AI, Rivera H, Barros-Núñez P. Clinical and genetic heterogeneity in patients with mosaic variegated aneuploidy: delineation of clinical subtypes. American journal of medical genetics. Part A 2008. link
2 Warburton D, Anyane-Yeboa K, Francke U. Mosaic tetrasomy 12p: four new cases, and confirmation of the chromosomal origin of the supernumerary chromosome in one of the original Pallister-Mosaic syndrome cases. American journal of medical genetics 1987. link