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BACKGROUND Carcinosarcoma of the sinonasal tract is an extremely rare malignant neoplasm; it is often designated as carcinoma with spindle cell or sarcomatoid features. We report a case of carcinosarcoma arising in a pre-existing inverted Schneiderian papilloma in the left maxillary antrum and nasal cavity of a 72-year old male patient. CASE REPORT The patient had a significant history of radiotherapy for squamous cell carcinoma in the sinonasal area, 3 decades ago. The patient presented with chief complaints of left nasal blockage, nasal discharge, anosmia, and occasional epistaxis. Computed tomography scan displayed a lobular soft tissue mass resulting in narrowing of the nasopharyngeal airway with massive destruction of palatal tissue. The lesion was resected via endoscopic surgery. Macroscopically, a white fleshy appearance with necrosis was noted in the submitted specimen. Microscopically, the tumor was composed of pleomorphic epithelial and spindle cells with numerous mitoses and remarkable tissue necrosis. Residual inverted papilloma (IP) with high-grade dysplasia, and minimal foci of moderately differentiated squamous cell carcinoma (SCC) component was present at the tumor margin. A distinct zone of transition of SCC to spindle cell carcinoma (SpSCC) was noted and confirmed by focal positivity of p63 in epithelial and sacromatoid components. The pleomorphic sarcomatoid tumor was positive for vimentin with Ki67 highlighting 70% of tumor cells. A final diagnosis of sinonasal spindle cell carcinoma associated with residual inverted papilloma was rendered. CONCLUSIONS Due to the rarity of such cases, the prognosis and response to treatment is unclear. No effective directed treatment has been developed. Unfortunately, the patient refused any further treatment and died of persistent disease. To the best of our knowledge, only one case of sinonasal carcinosarcoma arising from dysplastic inverted papilloma has been reported. The distinct possibility of previous radiotherapy contributing to development of sarcomatoid features in this neoplasm should also be considered.
This article was published in the following journal.
Name: The American journal of case reports
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Currently, the expression patterns of epidermal growth factor receptor (EGFR) family genes in sinonasal inverted papilloma (SNIP) and inverted papilloma with squamous cell carcinoma (IPwSCC) are not c...
To evaluate the involvement of EGFR signalling and HPV infection in a cohort of inverted sinonasal papilloma (ISP) and sinonasal squamous cell carcinoma (SNSCC) and their value for prognosis and clini...
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The investigator will assess the inverted sequence approach in the treatment of class III patient undergoing bimaxillary orthognathic surgery
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A small, often impalpable benign papilloma arising in a lactiferous duct and frequently causing bleeding from the nipple. (Stedman, 25th ed)
A mucosal tumor of the urinary bladder or nasal cavity in which proliferating epithelium is invaginated beneath the surface and is more smoothly rounded than in other papillomas. (Stedman, 25th ed)
Copies of nucleic acid sequence that are arranged in opposing orientation. They may lie adjacent to each other (tandem) or be separated by some sequence that is not part of the repeat (hyphenated). They may be true palindromic repeats, i.e. read the same backwards as forward, or complementary which reads as the base complement in the opposite orientation. Complementary inverted repeats have the potential to form hairpin loop or stem-loop structures which results in cruciform structures (such as CRUCIFORM DNA) when the complementary inverted repeats occur in double stranded regions.
An approach or process of practicing oral health care that requires the judicious integration of systematic assessments of clinical relevant scientific evidence, relating to the patient's oral and medical condition and history, with the dentist's clinical expertise and the patient's treatment needs and preferences. (from J Am Dent Assoc 134: 689, 2003)
Sequences of DNA or RNA that occur in multiple copies. There are several types: INTERSPERSED REPETITIVE SEQUENCES are copies of transposable elements (DNA TRANSPOSABLE ELEMENTS or RETROELEMENTS) dispersed throughout the genome. TERMINAL REPEAT SEQUENCES flank both ends of another sequence, for example, the long terminal repeats (LTRs) on RETROVIRUSES. Variations may be direct repeats, those occurring in the same direction, or inverted repeats, those opposite to each other in direction. TANDEM REPEAT SEQUENCES are copies which lie adjacent to each other, direct or inverted (INVERTED REPEAT SEQUENCES).
There are three main types of skin cancer: basal cell carcinoma, squamous cell carcinoma and malignant melanoma. Basal cell carcinoma Basal cell carcinoma, or BCC, is a cancer of the basal cells at the bottom of the epidermis. It’s very common ...