Search results for "Basal Cell"
showing 10 items of 129 documents
Determination of cytokeratins 1, 13 and 14 in oral lichen planus
2014
Cytokeratins (CK) are molecules of the cytoskeleton that contribute to the cellular differenciation. We studied the expression of CK1, CK13 and CK14 in thirty-three patients with OLP. The biopsied lesions were located in the dorsal surface of the tongue, the palatal keratinized mucosa and the nonkeratinized buccal mucosa. Objectives: This study aimed to determine the expression of CK1, CK13 and CK14 in oral lichen planus (OLP) and its relations with: clinical patterns, prognosis, drugs and tobacco intake and histopathological features. Study Design: Immunohistochemical analysis, retrospective, descriptive, observational and no randomized study. Results: No significant difference was observe…
Diagnostic value of CD34 immunostaining in desmoplastic trichilemmoma.
1998
Desmoplastic trichilemmoma (DT) is a variant of trichilemmoma, characterized by a central prominent desmoplastic component which may simulate invasive carcinoma. We have studied the morphologic and immunohistochemical features of seven cases of DT. Immunohistochemistry was performed on paraffin sections using monoclonal antibodies to CD34 (QBEND/10), vimentin and GCDFP-15. CD34 was also tested in seven cases of basal cell carcinoma (BCC), three with outer root sheath differentiation and four with morphea-form features, and five squamous cell carcinomas. Histologically, features of conventional trichilemmoma were seen at the periphery of the seven lesions. In contrast, at the center, the epi…
Prognosis in lower lip squamous cell carcinoma: assessment of tumor factors.
1998
We studied a consecutive series of 54 cases of lower lip squamous cell carcinoma (LLSCC) in order to identify any variables which might predict the development of lymph node metastases. The cases were divided into 38 tumors without metastases (group I) and 16 tumors with lymph node metastases (group II). The following factors were investigated: tumor size, histologic grading maximal thickness, perineural invasion, DNA ploidy and PCNA expression. In conclusion, we found that LLSCC greater than 2 cm in diameter, with histological grading G3-G4, thickness of more than 6 mm, DNA aneuploidy and high PCNA expression (PCNA LI > 0.48), were at high risk for the development of lymph node metastases.
Familial seborrhoeic keratosis associated with multiple 'pure reticulated acanthomas' and infundibulocystic basal cell carcinomas.
2017
Background A variety of genodermatoses with multiple cutaneous tumors with germline genetic alterations such as Gorlin syndrome with PTCH1 gene mutations have been described. Other cutaneous syndromes have been associated with somatic gene mutations, such as FGFR3 in familial seborrhoeic keratosis. Objective We describe the clinical, dermoscopic, and histopathological features of multiple cutaneous lesions, mostly infundibulocystic basal cell carcinomas and pure reticulated acanthomas, present in a family affected by familial seborrhoeic keratosis. In addition, we tested for possible germline alterations in the FGFR3 and PTCH1 genes. Methods Ten members of one family were clinically examine…
Features of biopsy in diagnosis of metatypical basal cell carcinoma (Basosquamous Carcinoma) of head and neck
2012
Metatypical Basal Cell Carcinoma, also known as Basosquamous Carcinoma is a subtype of Basal Cell Carcinoma. It is similar to Basal Cell Carcinoma for the gross aspect and regional recurrences, but it has the capacity to spread and develop metastasis. This terrible characteristic endangers the life of the patient if it is not readily recognized by the physicians. Herein we present a report of two patients affected by BSC originating in the nasal region and external ear that after a series of devastating local recurrences metastasized to the lung and bones in one case. The true incidence of Basoquamous Carcinoma may be higher, with underreporting arising because of rarity of diagnosis and la…
Protein Cargo of Salivary Small Extracellular Vesicles as Potential Functional Signature of Oral Squamous Cell Carcinoma
2021
The early diagnosis of oral squamous cell carcinoma (OSCC) is still an investigative challenge. Saliva has been proposed as an ideal diagnostic medium for biomarker detection by mean of liquid biopsy technique. The aim of this pilot study was to apply proteomic and bioinformatic strategies to determine the potential use of saliva small extracellular vesicles (S/SEVs) as a potential tumor biomarker source. Among the twenty-three enrolled patients, 5 were free from diseases (OSCC_FREE), 6 were with OSCC without lymph node metastasis (OSCC_NLNM), and 12 were with OSCC and lymph node metastasis (OSCC_LNM). The S/SEVs from patients of each group were pooled and properly characterized before perf…
Increased risk for nonmelanoma skin cancers in patients who receive thiopurines for inflammatory bowel disease.
2011
International audience; BACKGROUND & AIMS: Patients with inflammatory bowel disease (IBD) who have been exposed to thiopurines might have an increased risk of skin cancer. We assessed this risk among patients in France. METHODS: We performed a prospective observational cohort study of 19,486 patients with IBD, enrolled from May 2004 to June 2005, who were followed up until December 31, 2007. The incidence of nonmelanoma skin cancer (NMSC) in the general population, used for reference, was determined from the French Network of Cancer Registries. RESULTS: Before the age of 50 years, the crude incidence rates of NMSC among patients currently receiving or who previously received thiopurines wer…
Freestyle-Like V-Y Flaps of the Eyebrow: A New Outlook and Indication of an Historical Technique
2013
The eyebrow region is of utmost importance for facial movement, symmetry, and the overall cosmetic appearance of the face. Trauma or tumor resection often leave scars that may dislocate the eyebrow producing an alteration both in static symmetry of the face and in the dynamic expressivity. The authors present a technique for eyebrow’s defects repair using the remaining eyebrow advancement by means of a “freestyle-like” V-Y flap. In the past two years a total of eight consecutive patients underwent excision of skin lesions in the superciliary region and immediate reconstruction with this technique. On histology, six patients were affected from basal cell carcinomas, one from squamous cell ca…
Risk factors for non-melanoma skin cancer in kidney transplant patients in a Spanish population in the Mediterranean region.
2013
Non-melanoma skin cancer (NMSC) is the most frequent malignancy in organ transplant recipients. The aetiology of NMSC after transplant is multifactorial. The aim of this study was to determine the clinical and environmental factors involved in the development of NMSC in a Spanish kidney transplant population from the Mediterranean region. A total of 289 patients who had received a kidney transplant during the period January 1996 to December 2010 were included in the study. Both prospective and retrospective data were used. All patients underwent a structured interview and a complete examination of the skin. After a median follow-up of 72 months (range 12-180 months), 73 of the 289 patients …
The recurrence of odontogenic keratocysts in pediatric patients is associated with clinical findings of Gorlin-Goltz Syndrome
2019
Background Odontogenic keratocyst (OKC) is an odontogenic developmental cyst that presents distinct clinical behavior. This lesion has been described as dental cysts with keratinization since the 1930s, however the term "OKC" was established in 1956. This study aims to determine the frequency and features of OKC in children aged 0 to 14 years in an oral pathology service in Brazil. Material and Methods A retrospective study was performed to review cases of OKC in children diagnosed between 1986 and 2017. Clinical data were evaluated from medical records (gender, race, age, anatomical location, treatment, radiographic findings and follow-up). Results Ninety-seven cases of OKC were diagnosed …