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Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, BrazilDepartment of Oral and Maxillofacial Pathology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
An otherwise healthy 8-year-old boy was consulted in July 2020, presenting with a
20-day history of a painless tongue growth associated with trauma. According to his
parents, the lesion initially appeared as a “blood-filled blister” and had evolved
into an ulcerated swelling. Intraoral examination revealed a reddish, sessile nodule
with an ulcerated surface in the tongue dorsum's midline (Figures 1A and 1B). Although the lesion was asymptomatic, the patient reported slight discomfort when
swallowing. The patient's medical and family histories were unremarkable and non-contributory
to systemic conditions or malignancy. Given the history of trauma, location, and clinical
appearance, the primary differential diagnoses were reactive lesions or benign mesenchymal
tumors. An incisional biopsy was performed under local anesthesia to elucidate the
diagnosis, and 3 weeks after the procedure, the lesion presented an accelerated growth,
doubling its initial size, now appearing as an aggressive dome-shaped nodule. (Figures 1C and 1D).
Fig. 1Clinical features. (A, B) A firm and ulcerated broad-based nodule involving the dorsal tongue, 20 days after
the initial trauma, at which time the incisional biopsy was performed. (C, D) Three weeks after the incisional biopsy, the tumor appeared aggressively as a large
dome-shaped reddish nodule with superficial ulceration.
Rhabdomyosarcoma, spindle cell/sclerosing variant: a clinical and histopathological examination of this rare variant with three new cases from the oral cavity.
Recurrent SRF-RELA fusions define a novel subset of cellular myofibroma/myopericytoma: a potential diagnostic pitfall with sarcomas with myogenic differentiation.
