Publications by authors named "Jean Iacobelli"

Article Synopsis
  • There is a challenging distinction between digital papillary adenocarcinoma (DPAC) and benign skin tumors like poroid hidradenoma, as they share similar clinical and histological features.
  • Recent findings indicate that poroid hidradenoma often has YAP1-NUTM1 gene fusions, leading to NUT protein expression that can be detected via immunohistochemistry.
  • In a study comparing DPAC and poroid hidradenoma, strong NUT-1 expression was found in three out of four poroid hidradenoma cases, while it was absent in all DPAC cases, suggesting NUT-1 testing could aid in differentiating these conditions.
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Preferentially expressed antigen in melanoma (PRAME) is a tumor-associated repressor of retinoic acid signaling which is expressed in melanoma and has emerged as a potential biomarker for malignant behavior in melanocytic neoplasms. Although ancillary molecular techniques such as fluorescence in situ hybridization (FISH) are established techniques in the diagnosis of problematic cutaneous melanocytic proliferations, they are expensive, time-consuming, and require appropriate infrastructure, which places them out of reach of some laboratories. The advent of readily available commercial antibodies to PRAME has the potential to provide a more accessible alternative.

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Necrotizing fasciitis is an uncommon and deadly disease entity characterized by rapidly progressing skin and soft tissue destruction. It presents on a spectrum from an initially indolent appearing sub-acute form to a hyperacute fulminant course. It may often be misdiagnosed due to the paucity of signs early in the disease course and as it can initially mimic other less serious soft tissue infections.

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Sebaceous differentiation is commonly seen in cutaneous neoplasms, both in the context of lesions showing predominantly sebaceous differentiation (e.g., sebaceous adenoma, sebaceoma and sebaceous carcinoma), or as more focal sebaceous components in neoplasms with other primary lines of differentiation.

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Aims: To report a previously undescribed phenomenon of incidentally detected microscopic proliferations of sex cord cells, often mimicking adult granulosa cell tumour or sex cord tumour with annular tubules, in extraovarian locations.

Methods And Results: The six cases were in patients aged 23-58 years. The proliferations were located in the fallopian tube in three cases, and in paraovarian connective tissues, the pelvic side wall, and appendiceal serosa (one case each).

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Intravascular lymphoma (IVL) is a rare subtype of extranodal lymphoma. In the 2008 WHO classification of tumors of the hematopoietic and lymphoid tissues intravascular large B-cell lymphoma is included as a distinct entity. IVL of T-cell type is not included as a diagnostic category and is only mentioned in passing by Nakamura et al.

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Background And Study Aims: Descriptions of the natural history and endoscopic appearances of gastric dysplasia/intraepithelial neoplasia (IEN) that originate mainly from Europe. Currently, there are no Australian data available. We aimed to document endoscopic appearances and progression rates of gastric IEN and to determine the significance of indefinite for IEN.

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