Intraoral sebaceous carcinoma

Intraoral sebaceous carcinoma: A rare presentation on the tongue and review of the literature

Intraoral sebaceous carcinoma (SC) is exceedingly rare, especially in the tongue. We reported the clinicopathological and immunohistochemical features of a rare SC case in a 59-year-old male who presented a painful ulcer on the tongue's posterior region. Microscopically, the tumor was composed of atypical basaloid cells with round to oval nuclei and prominent nucleoli arranged in lobes showing prominent sebaceous differentiation and areas of holocrine secretion. Immunohistochemistry showed positivity for pan-cytokeratin AE1/AE3 and epithelial membrane antigen (EMA) and negativity for cytokeratin 7 (CK7). The sebaceous cells were positive for adipophilin and perforin. Wide surgical excision followed by adjuvant chemotherapy and radiotherapy was performed. Careful histopathological analysis of these lesions is crucial to ensure a correct diagnosis. Due to the aggressive behavior of SCs, early diagnosis and treatment are essential to increase the patient's survival time. To the best of our knowledge, this is the second case of SC in the tongue.

Sebaceous carcinoma of the lip: a case report and review of the literature

BACKGROUND

Sebaceous carcinoma is a very rare, aggressive, malignant tumor arising in the adnexal epithelium of the sebaceous gland. Sebaceous carcinoma in the oral cavity is extremely rare, with only 14 cases reported in literature. We reported the fourth case of sebaceous carcinoma involving the lip CASE PRESENTATION: A 71-year-old Caucasian male smoker presented an ulcerated lesion in the lateral region of the lower lip. The patient stated that the lesion had been present for 1 year. The past medical history was unremarkable. Extraoral examination revealed a markedly ulcerated, exophytic, irregularly shaped, indurated mass of the lower right labial region, measuring 1.8 cm in size. The nodular lesion, located at the point of transition between mucosa and skin, showed a central ulceration. No other intraoral lesions were identified. The clinical differential diagnosis included squamous cell carcinoma, basal cell carcinoma with sebaceous differentiation, and salivary gland neoplasms. Operation was performed under local anesthesia. On histopathological examination, the tumor was composed by nodules or sheet of cells separated by a fibrovascular stroma. The neoplastic tissue was deeply infiltrating, involving the submucosa and even the underlying muscle. Neoplastic cells showed a range of sebaceous differentiation with finely vacuolated rather than clear cytoplasm. Neoplastic cells were positive for S-100 protein and epithelial membrane antigen, but negative for carcinoembryonic antigen. Based on these findings, a diagnosis of sebaceous carcinoma of the lower lip was rendered.

CONCLUSION

The histogenesis, differential diagnosis, and clinicopathological conditions of this disease according to literature are reviewed. Sebaceous carcinoma should be distinguished from other tumors full of vacuolated clear cells. A periodic acid-Schiff stain and immunohistochemical stain for Ki-67, P53, cytokeratin, S-100, epithelial membrane antigen, and androgen receptor can be useful for the diagnosis.

Sebaceous carcinoma of the right palate: case report and literature review

Considering the low incidence rates of primary sebaceous carcinoma (SC) of extraorbital sites, let alone those occur in intraoral sites, clinicopathological characteristics and histogenesis are not fully understood. In the present case, a maxillary mass was presented and a low-grade malignant tumor was suspected according to the CT scans, preoperative FNA, and clinical conditions. Other carcinomas, including acinar cell carcinoma (ACC), basaloid cell carcinoma (BCC), SCC, mucoepidermoid carcinoma, and epithelial-myoepithelial carcinoma (EMC), were also considered before surgery. Due to the rare occurrence of SC and no preoperative suspects, a fresh sample was not kept. Sadly, thus cause those special stains (e.g., Oil Red O and Sudan IV) which form the primary basis for a diagnosis of SC in academic circles were missing. A comprehensive literature review identified only 10 cases of intraoral SC, of which the primary sites reported in the English literature were the buccal mucosa, mouth floor, upper labial mucosa, and tongue. Due to an absence of specific biomarkers and simulated characters, histochemistry and immunohistochemistry such as PAS, CK, EMA, p63, p53, S-100, calponin, CD117, Ki-67, a-SMA, and AR form the diagnostic standard of SC. Postoperative immunohistochemistry of our case showed S100(-), Ki-67(-), calponin(-), CD117(-), CK20(-), PAS(-), AR(+), CK(+), CK5/6(+), P53(+), P63(+), a-SMA (+). Thus the diagnosis of SC was finally made. Through discussing the findings of our case and reviewing literature, we present the histological features and discuss possible outstanding biomarkers of this neoplasm.

Impact of surgery and adjuvant treatment on the outcome of extraocular sebaceous carcinoma: a systematic review and individual patient's data analysis of 206 cases

BACKGROUND

Extraocular sebaceous carcinoma (EOSC) is an aggressive malignancy of the sebaceous gland. Surgery is considered the cornerstone of treatment, but there is lack of clarity about extent and adjuvant treatment.

METHODS

We conducted a systematic review and analysis of individual patient data of all published cases of EOSC to look into demography, pattern of care, importance of type of surgery, and other adjuvant treatment and survival outcome. A search of PubMed and Google Scholar was done with the key words sebaceous carcinoma, extraocular sebaceous carcinoma, and Muir-Torre syndrome till December 2017. The data were compiled in an Excel chart and analyzed using SPSS IBM software.

RESULTS

Data of 206 patients were retrieved. Median age at presentation was 65 years (range: 11-96 years). Surgery was performed in all except 13 patients. Of these 13, eight were deemed inoperable for extensive disease, and five had metastatic disease. Median PFS and OS for the entire cohort were 84 months (95% CI: 10-158 months) and 92 months (95% CI: 59-126 months). Univariate analysis revealed significantly poor survival for patients with a metastatic disease, regional nodal metastasis, and those with Mohs micrographic or incomplete surgery.

CONCLUSION

EOSC is a disease of elderly patients with good prognosis. Complete surgery with regional lymph node dissection is standard treatment. The role of adjuvant radiotherapy is debatable but can be considered in patients with incomplete surgery or high-risk factors.

Intraoral Sebaceous Carcinoma: Case Report of a Rare Tumor Emphasizing the Histopathological Differential Diagnosis

Background

Sebaceous carcinoma (SC) is an uncommon cutaneous malignancy, usually occurring predominantly in the eyelids and only occasionally involving the oral cavity. Sebaceous carcinoma (SC) is a rare malignancy. Only 10 cases of sebaceous carcinoma of the oral cavity have been reported so far.

Case Presentation

A 40-year-old female presented with a mass on the left side of the middle third of the face. Radiographic findings were inconclusive. Resection of the mass was consistent with the diagnosis of primary sebaceous carcinoma.

Conclusion

Intraoral sebaceous carcinoma is uncommon. Due to its varied clinical appearance and presence of a diverse histopathologic appearance, the diagnosis is quite often confounding and elusive. Hence, it is imperative to familiarize oneself about various aspects of this rare tumor for earlier diagnosis, to improve the chances of patient's survival.

Intraoral sebaceous carcinoma metastatic to the lung and subcutis: Case report and discussion of the literature

BACKGROUND

Intraoral sebaceous carcinoma is a rare form of sebaceous carcinoma with only 9 published cases in the world literature to date. We present a 10th case of intraoral sebaceous carcinoma located in the anterior maxillary gingiva with metastases to the lung and subcutis and discuss 3 possible etiologies for this unique presentation.

METHODS

We analyze the clinical presentation, pathology, histology, and genetic testing for a single case study and review relevant literature.

RESULTS

The histologic findings of the lung tumor and surgical excisions of the tumors in the gingiva and subcutis suggest the gingiva is the primary site. There is no evidence for the genetic abnormalities consistent with Muir-Torre syndrome.

CONCLUSION

The histologic findings suggest the oral cavity is the most likely site of tumor origin. This is the first case of intraoral sebaceous carcinoma reported to arise in the gingiva as well as to spread to cutaneous sites.

Sebaceous carcinoma of the maxillary gingival: First reported case involving the gingiva

Sebaceous carcinoma of the oral cavity is extremely rare. To date, only 9 cases of primary sebaceous carcinoma involving the oral cavity have been reported in the English literature, with the majority of cases occurring on the buccal mucosa. This report describes a case of sebaceous carcinoma involving the maxillary gingiva. To our knowledge this is the first reported case of sebaceous carcinoma of the gingiva.

Sebaceous carcinoma of the oral cavity: a case report and review of the literature

We report the clinical and pathologic features of an intraoral sebaceous carcinoma and review the literature. The intraoral buccal mucosal tumor from a 50-year-old man was a poorly differentiated carcinoma with sebaceous differentiation and expression of androgen receptor. Fordyce granules and a minor salivary gland with a duct were identified in vicinity to the tumor. We discuss the differential diagnosis and histogenesis. The patient underwent surgery and adjuvant radiation therapy.

Sebaceous carcinoma of the parotid gland in children: an immunohistochemical and ploidy study

Sebaceous carcinoma (SC) is a rare malignancy, affecting mainly the periocular glands. To the best of the authors' knowledge, this is the first English-language report of parotid SC affecting children; two cases are presented. Immunohistochemical studies included 29 different antibodies (15 of these were cytokeratins, CKs). For each case, DNA ploidy status was determined using isolated nuclei stained with Feulgen and analysed using a DNA image cytometry system. Most of the tumour cells were positive for CKs AE1/AE3, 34B12, 5 and 7. The CK14 pattern depicted the monolayer of basal cells surrounding the islands of malignant tissue, while the more central sebaceous differentiated cells were negative. Epithelial membrane antigen was strongly positive in the well differentiated cells, while most of the basaloid peripheral cells were negative, and only a few cells were positive for carcinoembryonic antigen. beta catenin, E cadherin and C-erb B2 were expressed by most of the cells including the more differentiated sebaceous cells. Tumour cells were negative for muscle or myoepithelial markers, androgen, oestrogen and progesterone receptors. Both SCs were uniformly diploid, and showed low proliferative indices for p53, Ki-67 and Mcm-2, which is consistent with the good clinical course presented by these patients so far.

Intraoral sebaceous carcinoma

Intraoral sebaceous carcinoma (SC) is a rare tumour in the oral cavity thought to arise from malignant transformation of oral sebaceous glands. To our knowledge, only six cases of intraoral SC have been reported in the English language literature. The purpose of the present article is to report an additional case and review the literature.

Sebaceous carcinoma of the oral mucosa: case report and review of the literature

Fordyce granules are found in the oral mucosa of up to 80% of adults. However, primary malignant sebaceous tumors of the oral mucosa are exceedingly rare. To our knowledge, only 5 examples of intraoral sebaceous carcinoma have been reported in the literature. This report describes a primary sebaceous carcinoma of the labial mucosa that arose in an area containing numerous Fordyce granules. A brief review of the clinical and histopathologic features of sebaceous carcinoma is also presented.

Intraoral sebaceous carcinoma

Sebaceous carcinoma in the oral cavity is extremely rare, and we have found only four previously reported cases. We describe a fifth case. A wide surgical excision seems to be the correct treatment and estimation of serum carcinoembryonic antigen (CEA) may be a useful tumour marker in the follow-up of intraoral sebaceous carcinomas.

Sebaceous carcinoma of buccal mucosa. Report of a case

A case of sebaceous carcinoma arising in the buccal mucosa is described.

Intraoral sebaceous carcinoma

Sebaceous carcinoma arising from the buccal mucosa is very rare. Only one such case has been reported in the English literature. We report a second case arising in an 11-year-old girl.

Sebaceous carcinoma of the parotid gland

A report of an 87-year-old Caucasian female with an extensive sebaceous carcinoma of the parotid gland is presented. The computed tomographic characteristics of this rare neoplasm are reported for the first time.

Pathology of intraoral sebaceous glands

Large clinical studies have shown that intraoral sebaceous glands are present in 70 to 95% of the population. In many individuals these small white to yellow macules and papules are so numerous that they dominate the buccal mucosa. Despite their prevalence, pathological changes of these glands are considered uncommon. This paper reviews the pathologic spectrum of intraoral sebaceous glands including Demodex infestation, cystic lesions, sebaceous hyperplasia and neoplastic lesions. New data is presented on the true sebaceous cyst and the second reported case of intraoral steatocystoma simplex is documented.

Intraoral sebaceous hyperplasia. Diagnostic criteria

Surprisingly little is understood about the physiologic and pathologic processes that involve intraoral sebaceous glands. Neoplasms are rare. Hyperplasia of these glands is undoubtedly more common, but criteria for the diagnosis of intraoral sebaceous hyperplasia have not been established. These lesions are too often misdiagnosed as large "Fordyce granules" or, when very large, as sebaceous adenomas. On the basis of a series of 31 nonneoplastic sebaceous lesions and on published data, the following definition is proposed: intraoral sebaceous hyperplasia occurs when a lesion, judged clinically to be a distinct abnormality that requires biopsy for diagnosis or confirmation of clinical impression, has histologic features of one or more well-differentiated sebaceous glands that exhibit no fewer than 15 lobules per gland. Sebaceous glands with fewer than 15 lobules that form an apparently distinct clinical lesion on the buccal mucosa are considered normal, whereas similar lesions of other intraoral sites are considered ectopic sebaceous glands. Sebaceous adenomas are less differentiated than sebaceous hyperplasia.