Unusual histologic variants of melanoma may be problematic to the histopathologist. Several of these variants are sufficiently rare that their biologic behavior remains obscure. As identification of some of these melanoma subtypes has specific implications for the therapeutic approach, and as some may mimic other forms of epithelial or mesenchymal neoplasia, their recognition is key to patient management.
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http://dx.doi.org/10.1007/s11912-007-0055-7 | DOI Listing |
Adv Anat Pathol
November 2024
Department of Radiology, School of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil.
Horseshoe kidney is a rare congenital anomaly with an unusually higher frequency of neuroendocrine tumors. Symptoms are rare, and, in most of the cases, are incidentally diagnosed. The clinical behavior of these tumors is heterogeneous and can be difficult to predict based on histology alone.
View Article and Find Full Text PDFBMC Oral Health
January 2025
Department of Oral Implantology, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, 510182, China.
Background: Fibrous dysplasia (FD) is a self-limiting benign disease with slow progression in which the normal bone is replaced by dysplastic fibrous tissue. The craniofacial skeleton is one of the most commonly affected areas, and it can create unique challenges in dental implant therapy. This case aims to report an unusual presentation of FD localized in the alveolar crest bone of the edentulous site, causing special obstacles to implant placement, and provide a diagnostic and treatment process that may be referenced.
View Article and Find Full Text PDFInt J Surg Case Rep
December 2024
Urology A Department, University Hospital IBN SINA, Morocco.
Introduction And Importance: Follicular cystitis (FC) is a rare inflammatory disorder of the bladder that predominantly affects women. The exact cause of FC remains largely unknown, although it has been associated with inflammatory processes and bacterial infections, particularly following urinary tract infections. Regarding orphan diseases, like follicular cystitis, where large-scale trials seem virtually impossible, case reports find their place and guide the scientific community to find the best course of action.
View Article and Find Full Text PDFDermatopathology (Basel)
November 2024
Department of Dermatology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
Spindle cell lipoma (SCL) is a benign adipocytic tumor usually found in the subcutis of the posterior neck, upper back, and shoulder, predominantly in middle-aged males. This case report describes an atypical presentation of SCL in a 26-year-old male with a history of malignant melanoma. The patient presented with an erythematous plaque with central hyperpigmentation on the right upper arm, an uncommon location and presentation for SCL.
View Article and Find Full Text PDFDiagn Cytopathol
December 2024
Department of Pathology, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Introduction: Thyroid lesions are one of the most common diseases observed in clinical practice in the North India. These diseases have distinct cytological morphology and thus FNAC is done frequently. Here we report a case of adenomatoid goitre mimicking adenoid cystic carcinoma (ACC) of salivary gland on cytology.
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