ArticleRomanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie
Basaloid squamous cell carcinoma with prominent shadow (ghost) cell differentiation. An unreported neoplasm of the parotid gland.
Article in Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed, 2 citations in OpenAlex.
- Expression of SOX10, and micro-RNA 221 and Micro-RNA 222 in Oral Squamous Cell Carcinoma and Correlation with Clinicopathological Characteristics.Head and neck pathology · 2025Article
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4 authors at 2 institutions in 1 country.
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Abstract
Basaloid squamous cell carcinoma (BSCC) is an aggressive type of squamous cell carcinoma (SCC) predominant in the upper aerodigestive tract. To our knowledge, only one case of that tumor has been previously described in the parotid gland. Shadow (ghost) cell differentiation (SCD) is a specialized form of keratinization characteristic of pilomatricoma, and other skin tumors with follicular differentiation. SCD has also been described infrequently in some visceral carcinomas and rarely in the minor salivary glands. Recently, an SCC with prominent SCD has been reported in the parotid. We report for the first time the case of parotid BSCC with prominent SCD in an 87-year-old man. He was admitted due to the appearance in the last few months of a mass, painful on palpation, in the left parotid region. Imaging studies and tru-cut biopsies indicated the need for surgical removal. A left superficial parotidectomy, including the branch of the cervicofacial nerve, was performed. The BSCC showed predominance (62%) of SCD. Immunohistochemically, the basaloid cells were positive for β-catenin, pan-cytokeratin (pan-CK) AE1∕AE3, CK19, high-molecular-weight CK (HMWCK), p63, p40, and cluster of differentiation 10 (CD10) in a diffuse pattern. No signs of recurrence or metastasis were observed four months after surgery. The main differential diagnoses include nuclear protein in testis (NUT) carcinoma, adamantinoma-like Ewing sarcoma, embryonal carcinoma, and basal cell adenocarcinoma of the solid type. SCD in BSCC of the parotid should be recognized to avoid misdiagnosis, especially in small samples. Although rare, BSCC with SCD should be added to the list of tumors that may originate in the parotid gland.
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