Rationale: Melanoma in situ of the penis is very rare and there are no clear guidelines for its surgical treatment.
Patient Concerns: The authors describe the case of a 69-year-old man who presented with an asymptomatic brown macula on his glans penis and foreskin that appeared about 8 years earlier, enlarged in the last few months.
Diagnoses: A diagnostic biopsy showed the characteristics of a melanoma in situ.
Interventions: The authors decided to excise the lesion keeping a healthy margin of 1 cm all over around except close to the urethral meatus, where it was impossible, and where only 5 mm of free margin was excised. A full thickness mucosal graft from oral cavity was performed to repair the defect.
Outcomes: No recurrence or metastasis occurred during 50 months after the operation.
Lessons: Considering that at the sixth clinical follow-up the patient was alive and disease free at 50 months after surgery, the chosen treatment has proved successful.
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http://dx.doi.org/10.1097/MD.0000000000007652 | DOI Listing |
Diagn Pathol
December 2024
Department of Pathology, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, China.
Background: Isolated immunohistochemical indicators are limited to diagnose melanocytic neoplasms. This retrospective study is to assess the diagnostic value of combined immunohistochemical analysis targeting preferentially expressed antigen in melanoma (PRAME) and p16 in melanocytic neoplasms, with a detailed focus on arcal lesions.
Methods: This was a single center cohort study from January 2022 to June 2023.
J Funct Biomater
December 2024
Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
Surgery is considered the gold standard for treating melanoma, but the high recurrence rate after surgery still remains as a major challenge. Therefore, using doxorubicin (DOX) as a model drug, this study investigated the 3D printing of anticancer drug-loaded hydrogel blend scaffolds for inhibiting post-operation melanoma recurrence and for promoting tissue regeneration. Three-dimensional printing could successfully produce methacrylate-modified chitosan (CSMA) and methylcellulose (MC) hydrogel blend scaffolds.
View Article and Find Full Text PDFPlast Reconstr Surg Glob Open
December 2024
General Medicine, Universidad del Rosario, Bogotá, Colombia.
Background: The Brunelli flap is an option in the reconstruction of the thumb after trauma or oncological resections. The arc of movement of the flap makes it possible to resolve defects in the proximal, palmar, dorsal, and lateral regions.
Methods: We present a case series of 11 patients in whom a Brunelli flap was performed for postoncological reconstruction, melanoma in situ, and invasive squamous cell carcinoma of the thumb nail unit associated with Mohs micrographic surgery.
Biomaterials
December 2024
Institute of Precision Medicine, Peking University Shenzhen Hospital, 518036, Shenzhen, China. Electronic address:
Radiotherapy, employing high-energy rays to precisely target and eradicate tumor cells, plays a pivotal role in the treatment of various malignancies. Despite its therapeutic potential, the effectiveness of radiotherapy is hindered by the tumor's inherent low radiosensitivity and the immunosuppressive microenvironment. Here we present an innovative approach that integrates peroxynitrite (ONOO)-mediated radiosensitization with the tumor-associated neutrophils (TANs) polarization for the reversal of immunosuppressive tumor microenvironment (TME), greatly amplifying the potency of radiotherapy.
View Article and Find Full Text PDFImmunooncol Technol
December 2024
Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, Cancer Center Amsterdam, Amsterdam Institute for Immunology and Infectious Diseases, Amsterdam, The Netherlands.
Background: Tumor heterogeneity is a hurdle to effective therapy, as illustrated by the 'mixed responses' frequently seen in immunotherapy-treated patients. Previously, AXL+ tumor cells were identified to be highly resistant to targeted therapy, whereas more differentiated MITF+ tumor cells do respond to RAF and MEK inhibitors.
Patients And Methods: In this study, we analyzed tumor heterogeneity and explored the presence of the previously described AXL+ or MITF+ melanoma subpopulations in metastatic tissues by NanoString gene expression analysis, single-cell RNA sequencing and multiplex immunofluorescence.
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