Post-traumatic lip lesion mimicking rhabdomyomatous mesenchymal hamartoma in a pediatric patient

We report a 7-year-old boy who presented with a nodule on the upper lip. A previous clinical history of mechanical trauma in the lesional area had been noted. After surgical excision, microscopy revealed fibrocollagenous fascicles associated with neurovascular bundles and skeletal striated muscle fi...

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Bibliographic Details
Published in:Dermatology online journal 2020-11, Vol.26 (11)
Main Authors: Jiménez Polanco, Xiomara Beatriz, Paes Torres, Carolina, Albergoni Silveira, Heitor, Yamamoto Almeida, Luciana, Bezerra Segato, Raquel Assed, Esquiche León, Jorge
Format: Article
Language:English
Subjects:
Dermatology
Mouth
Tissue engineering
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Summary:We report a 7-year-old boy who presented with a nodule on the upper lip. A previous clinical history of mechanical trauma in the lesional area had been noted. After surgical excision, microscopy revealed fibrocollagenous fascicles associated with neurovascular bundles and skeletal striated muscle fibers in diffuse subepithelial distribution, suggesting rhabdomyomatous mesenchymal hamartoma. However, strict clinicopathological correlation favored a healing process with trapped striated skeletal muscle tissue. After three years of follow-up, an improvement in the aesthetic appearance of the upper lip was observed. To the best of our knowledge, a case of pseudo-rhabdomyomatous mesenchymal hamartoma has not been reported to date.
ISSN:1087-2108
1087-2108
DOI:10.5070/D32611048111