RESUMO
Degenerative collagenous plaques of the hands is an underrecognized acquired dermatosis characterized by slowly progressive linear depressed bands appearing symmetrically at the margins of palmar and dorsal skin of the hands. It is more common in the elderly and is believed to result from chronic pressure and ultraviolet radiation. We present an elderly woman with degenerative collagenous plaques of the hands to highlight an underrecognized rare dermatosis.
Assuntos
Dermatoses da Mão , Idoso , Feminino , Mãos , Dermatoses da Mão/diagnóstico , Humanos , Pele , Raios UltravioletaRESUMO
The presence of sebaceous skin tumors with visceral neoplasms is known as Muir-Torre syndrome (MTS). It is a phenotypic subset of hereditary nonpolyposis colorectal cancer and is caused by mutations in genes encoding for mismatch repair (MMR) proteins. The presence of a sebaceous gland neoplasm should raise concern for a potential diagnosis of MTS. Immunohistochemical analysis of the sebaceous skin tumors can be helpful in screening for an MMR defect and preselecting patients who are at increased risk of a visceral malignancy. We report a case of MTS and show immunohistochemical analysis of the sebaceous neoplasm. We also review the literature on MTS and the effectiveness of immunohistochemical analysis in screening patients at risk for MTS.
Assuntos
Neoplasias Colorretais Hereditárias sem Polipose/diagnóstico , Neoplasias das Glândulas Sebáceas/diagnóstico , Neoplasias Colorretais Hereditárias sem Polipose/genética , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias das Glândulas Sebáceas/genética , SíndromeRESUMO
We report a case of a 27-year-old woman with a known history of Burkitt-like lymphoma (BLL), who presented with a rapidly enlarging nodule in the suprapubic area. Skin biopsy of the suprapubic nodule was consistent with cutaneous involvement of BLL. BLL is a highly aggressive B-cell lymphoma with a high proliferative rate. Like Burkitt lymphoma, BLL is characterized by a translocation of the c-MYC proto-oncogene. Histopathologic characteristics are considered borderline between those of classic Burkitt lymphoma and diffuse large B-cell lymphoma. Cutaneous involvement of BLL is rare and poorly documented in the literature.
Assuntos
Linfoma de Burkitt/patologia , Linfoma Difuso de Grandes Células B/patologia , Neoplasias Cutâneas/patologia , Adulto , Linfoma de Burkitt/genética , Linfoma de Burkitt/imunologia , Antígenos CD79/análise , Feminino , Regulação Neoplásica da Expressão Gênica , Genes myc , Humanos , Imuno-Histoquímica , Antígeno Ki-67/análise , Linfócitos/imunologia , Linfócitos/patologia , Linfoma Difuso de Grandes Células B/genética , Linfoma Difuso de Grandes Células B/imunologia , Invasividade Neoplásica , Proto-Oncogene Mas , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/imunologia , Translocação GenéticaRESUMO
BACKGROUND: Psoriasis is a chronic, unpredictable, and incurable disease that has a negative impact on patients' quality of life. Palm and sole psoriasis can add to this negative impact as it directly affects activities of daily living. OBJECTIVE: We sought to estimate the prevalence of palmoplantar psoriasis in a patient population and to explore associations with patient outcomes. METHODS: In all, 317 individuals with psoriasis completed a comprehensive assessment battery. Patients with palmoplantar psoriasis (n = 124, 39%) were compared with patients without palmoplantar involvement with respect to functional disability, psychiatric symptoms, physical and social discomfort, self-reported psoriasis severity, and health-related quality of life. RESULTS: Patients with palmoplantar involvement reported significantly greater physical disability and physical discomfort than patients without palmoplantar involvement (both P <.01). There were no differences between the 2 groups with respect to psychosocial outcomes. CONCLUSION: Patients with palmoplantar psoriasis are affected to a greater degree by the physical aspects of the disease than patients without palmoplantar involvement.