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1.
Cureus ; 15(1): e34292, 2023 Jan.
Article in English | MEDLINE | ID: mdl-36721707

ABSTRACT

Subungual melanomas are rare neoplasms that tend to debut as longitudinal melanonychia. They are primarily found in patients over 60 years of age and are usually diagnosed late, representing a diagnostic challenge. We present a case report of a 59-year-old female Hispanic patient who initially presented with melanonychia and was eventually diagnosed with subungual melanoma in situ. She was surgically treated and, after three months, remained healthy. Relevant risk factors, clinical and onychoscopic findings, diagnostic criteria, and treatment options are also discussed. Since many benign entities present similarly, high clinical suspicion is critical for diagnosing this entity.

2.
CES med ; 36(3): 99-105, set.-dic. 2022. tab, graf
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1420968

ABSTRACT

Resumen Introducción: el onicomatricoma es un tumor fibroepitelial originado en la matriz ungular, es infrecuente y suele presentarse alrededor de la quinta y sexta década de la vida. Métodos: se presenta el caso de un paciente masculino de 57 años, sin antecedentes patológicos, quien consultó por una lesión no dolorosa en la uña del tercer dedo de la mano derecha. Al examen físico presentaba cromoniquia amarilla longitudinal, estrías blanquecinas y hemorragias en astilla. Se realizó onicectomía y matricectomía proximal y se envió el especimen resecado a estudio histopatológico. Resultados: el examen histopatológico reportó una lesión fibroepitelial, con invaginaciones del epitelio y ausencia de la capa granulosa. En el estroma se observaban células ondulantes y fusocelulares acompañadas de mastocitos. Se realizaron tinciones de inmunohistoquímica, confirmando el diagnóstico de onicomatricoma, variante micropapilifera. Conclusiones: debido a los múltiples diagnósticos diferenciales de esta condición, es importante para el dermatólogo familiarizarse con la clínica, hallazgos dermatoscópicos y manejo de esta entidad.


Abstract Introduction: onychomatricoma is a fibroepithelial tumor originating in the nail matrix, it is infrequent and usually presents around the fifth and sixth decades of life. Methods: we present the case of a 57-year-old male patient, without relevant past medical history, who complained of a non-painful lesion in the nail of the third finger of the right hand. Physical exam revealed longitudinal yellow chromonychia, whitish striae, and splinter hemorrhages. Onychectomy and proximal matricectomy were performed and the resected specimen was sent for histopathological study. Results: the histopathological study reported a fibroepithelial lesion, with invaginations of the epithelium and absence of the granular layer. Undulating and spindle cell cells accompanied by mast cells were observed in the stroma. Immunohistochemical staining was performed, confirming the diagnosis of onychomatricoma, micropapiliferum variant. Conclusions: due to the multiple differential diagnoses of this condition, it´s important for the dermatologist to become familiar with the clinic, dermoscopic findings and management of this entity.

3.
Med. U.P.B ; 19(1): 45-48, abr. 2000.
Article in Spanish | LILACS | ID: lil-612360

ABSTRACT

Se presenta el caso de una mujer de 45 años con una masa en el cuarto dedo de la mano derecha. El diagnóstico de tumor de células gigantes de la vaina tendinosa fue hecho por clínica e histopatología. El tratamiento fue cirugía, con buena evolución.


Subject(s)
Humans , Neoplasms , Giant Cells
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