14-year case series of eyelid sebaceous gland carcinoma in Chinese patients and review of management

Treatment of sebaceous carcinoma with Mohs micrographic surgery versus wide local excision: a systematic review

Sebaceous carcinoma (SC) is a rare neoplasm affecting periocular and extraocular sites. If inadequately treated, it can recur and cause morbidity. Specific management guidelines have not been established. Wide local excision (WLE) has been traditionally used; however, Mohs micrographic surgery (MMS) can be advantageous because of complete margin assessment and tissue-sparing nature. This analysis aims to systematically review the surgical modalities used for the management of SC. Articles meeting eligibility criteria were identified using MEDLINE (via PubMed), Embase, Cochrane, and Scopus databases. All studies investigating surgical management of SC with WLE or MMS were considered. Seventy studies met inclusion criteria, including retrospective cohort studies, case series, and case reports. WLE was used in 32 studies, MMS in 29, and MMS and WLE in 9. Subgroup analysis showed that MMS has lower recurrence rates. For WLE, local, regional, and distant recurrence rates were 23.4%, 13.3%, and 11.0%, respectively, and for MMS, 6.8%, 4.3%, and 4.6%, respectively. Patients treated with WLE were more likely to have local recurrence than patients treated with MMS (P = 0.001). WLE cases were more likely to have a regional (P = 0.05) and distant recurrence (P = 0.001). Limitations of the study include heterogeneity of case reports, case series, and retrospective studies, variable follow-up times between the two groups, and large tumors included in the WLE category. In addition, disease-specific survival was not evaluated. MMS cases showed a superior outcome for local, regional, and distant recurrence, making it a good option for the management of SC.

Periocular sebaceous carcinoma: updates in the diagnosis, treatment, staging, and management

Periocular sebaceous carcinoma (PSC) is a rare, aggressive, and potentially metastatic adnexal malignancy. Due to the ability of PSC to resemble several benign and malignant conditions, diagnosis is often delayed or mistaken. In addition, even with a known diagnosis, choosing the right treatment is still an open debate. For this reason, we decided to review the most up-to-date literature on PSC and propose a dedicated procedural protocol to help clinicians when dealing with PSC. A PubMed search was carried out using the terms "Sebaceous Carcinoma", "Adnexal Periocular Cancer", "Sebaceous Carcinoma AND eyelid", "Periocular Sebaceous Carcinoma", and "Ocular Adnexa". Pertinent studies published in English from 1997 up to December 2022 were compared to the selection criteria and if suitable, included in this review. Through the initial search, 84 articles were selected. Of these, 36 were included in the final study. Several papers explored different diagnostic and therapeutic strategies regarding PSC diagnosis and management. In light of the current literature review and the multidisciplinary experience of three clinical centers, a dedicated procedural protocol is proposed. PSC diagnosis may be achieved through accurate clinical evaluation, but it requires histopathologic confirmation, which can be challenging. Dermoscopy, in vivo reflectance confocal microscopy, and optical coherence tomography may facilitate PSC clinical examination, while immunohistochemistry stains may support histological diagnosis. Appropriate disease staging is necessary before choosing the treatment, as local disease requires radically different treatment compared to advanced disease. In addition, recent innovations in nonsurgical treatments, including radio-chemotherapy, immunotherapy, and targeted therapy, may be a viable option in the most challenging cases.

Parotid Metastasis of Early-Stage Upper Eyelid Sebaceous Carcinoma: A Case Presentation and a Literature Review

Metastasis from early-stage sebaceous carcinoma of the eyelid to the salivary glands is considered very rare, occurring in less than 3% of early-stage patients. We report the case of a 72-year-old Caucasian man with a parotid tumor. Fine needle aspiration was consistent with a salivary duct carcinoma. A subtotal parotidectomy with ipsilateral neck dissection was performed. The pathology report revealed a sebaceous carcinoma with one parotid and two cervical lymph nodes infiltrated. The patient had a history of an early-stage sebaceous carcinoma of the upper eyelid two years before, which was revealed after the histological examination. An early-stage eyelid sebaceous carcinoma can metastasize to lymph nodes of the parotid glands. A close follow-up should not be neglected.

Clinical Outcomes in Sebaceous Carcinoma: A Retrospective Two-Center Cohort Study

BACKGROUND

Sebaceous carcinoma (SC) is a rare, potentially recurrent, and life-threatening cutaneous malignancy that can be associated with Muir-Torre syndrome (MTS), a DNA mismatch repair-driven genodermatosis. Earlier studies examining factors associated with recurrence have focused on periocular tumors only.

OBJECTIVE

Examine outcomes of SC and identify factors associated with recurrence.

MATERIALS AND METHODS

Retrospective study from 2 tertiary care centers.

RESULTS

Sixty-seven cases from 63 patients were identified, including 7 cases of MTS and 13 arising in the context of immunosuppression. Fifty-five cases (82.1%) were treated with complete circumferential peripheral and deep margin assessment (CCPDMA) methods. Five recurrences developed during the postoperative period. On univariate analysis, periocular location (odds ratio [OR] 7.6, p = .0410), and lesion size ≥2 cm (OR 9.6, p = .005) were associated with recurrence, whereas CCPDMA (OR 0.052, p = .0006) was inversely associated with recurrence. On multivariate analysis, only lesion size ≥2 cm (OR 9.6, p = .0233) and CCPDMA approaches (OR 0.052, p = .007) were significant.

CONCLUSION

Non-complete circumferential peripheral and deep margin assessment methods and large lesion size were independent risk factors predicting recurrence, whereas anatomic subtype and MTS status were not. These findings can assist in identifying SC cases that may benefit from more aggressive treatment and closer surveillance.

Establishment and Characterization of a TP53-Mutated Eyelid Sebaceous Carcinoma Cell Line

Purpose

Eyelid sebaceous carcinoma (SeC) is the third most frequent eyelid malignancy worldwide and is relatively prevalent in Asian patients. An eyelid SeC cell line model is necessary for experimental research to explore the etiology and pathogenesis of eyelid SeC. This study established and characterized an eyelid SeC cell line with a TP53 mutation that might be useful for analyzing potential treatment options for eyelid SeC.

Methods

The eyelid SeC cell line SHNPH-SeC was obtained from a patient with eyelid SeC at Shanghai Ninth People's Hospital (SHNPH), Shanghai JiaoTong University School of Medicine. Immunofluorescence staining was employed to detect the origination and proliferation activity. Short tandem repeat (STR) profiling was performed for verification. Chromosome analysis was implemented to investigate chromosome aberrations. Whole exome sequencing (WES) was used to discover genomic mutations. Cell proliferation assays were performed to identify sensitivity to mitomycin-C (MMC) and 5-fluorouracil (5-FU).

Results

SHNPH-SeC cells were successively subcultured for more than 100 passages and demonstrated rapid proliferation and migration. Karyotype analysis revealed abundant chromosome aberrations, and WES revealed SeC-related mutations in TP53, KMT2C, and ERBB2. An in vivo tumor model was successfully established in NOD/SCID mice. Biomarkers of eyelid SeC, including cytokeratin 5 (CK5), epithelial membrane antigen (EMA), adipophilin, p53, and Ki-67, were detected in SHNPH-SeC cells, original tumors, and xenografts. MMC and 5-FU inhibited the proliferation and migration of SHNPH-SeC cells, and SHNPH-SeC cells presented a greater drug response than non-TP53-mutated SeC cells.

Conclusions

The newly established eyelid SeC cell line SHNPH-SeC demonstrates mutation in TP53, the most commonly mutated gene in SeC. It presents SeC properties and malignant characteristics that may facilitate the investigation of cellular behaviors and molecular mechanisms of SeC to explore promising therapeutic strategies.

Eyelid sebaceous gland carcinoma, validation of AJCC 8th edition T staging- a retrospective study from North India

PURPOSE

This study compares the 8th edition staging of AJCC for prognosis of eyelid Sebaceous Gland Carcinoma (SGC) patients with respect to the 7th edition.

METHODS

A retrospective study was undertaken over a period of 100 months. Ninety-nine histopathologically proven cases of eyelid SGC available for follow-up were recruited. Patients were staged by both the 7th and 8th editions of AJCC and followed up at six monthly intervals after surgery.

RESULTS

Of the 99 eyelid SGC patients recruited, recurrence and orbital invasion developed in 22%, lymph node metastasis in 21% and 4% had distant metastasis and also died. High-risk features include tumour size>20 mm, orbital invasion, exenteration and staging by both the 7th and 8th editions of AJCC. Cox regression analysis revealed that staging by AJCC 8th edition was associated with greater risk for local recurrence (HR 3.01,95% CI-1.65-5.51%, p < 0.01) lymph node metastasis (HR 8.26, 95% CI 3.96-17.19%, p < 0.01) and disease-free survival (HR 4.61, 95% CI 2.81-7.54). The Kaplan-Meir survival curves of eyelid SGC patients by the 8th edition AJCC staging were also significantly associated with lymph node metastasis (p < 0.01), tumour-related deaths (p < 0.01) and reduced disease-free survival (p = 0.07). The higher Harrell's values by the 8th edition signify better predictive value for lymph node metastasis and DFS (disease-free survival). The lower AIC values indicate a better monotonicity of gradients for lymph node metastasis, recurrence and DFS.

CONCLUSION

Staging by the 8th AJCC edition is, therefore, recommended for eyelid SGC as it gives a better perspective about disease outcome. The orbital extension was the single most important predictor of lymph node metastasis, recurrence and death.

Prognostic risk factors and nomogram construction for sebaceous carcinoma: A population-based analysis

Background

Sebaceous gland carcinoma (SGC) is a rare tumor for which there are currently no effective tools to predict patient outcomes. We analyzed the clinical and pathological prognostic risk factors of sebaceous carcinoma based on population data and created a nomogram of related risk factors, which can more accurately predict the 3-, 5-, and 10-year overall survival (OS) rates of patients.

Methods

SGC patients between 2004 and 2015 were collected from the Surveillance, Epidemiology, and End Results (SEER) database and randomly assigned to training and validation cohorts. Relevant risk factors were identified by univariate and multivariate COX hazards regression methods and combined to produce a correlation nomogram. The concordance index (C-index), the area under the receiver operating characteristic (AUC) curve, and calibration plots have demonstrated the predictive power of the nomogram. Decision curve analysis (DCA) was used to measure nomograms in clinical practice.

Results

A total of 2844 eligible patients were randomly assigned to 70% of the training group (n=1990) and 30% of the validation group (n=854) in this study. The derived meaningful prognostic factors were applied to the establishment of the nomogram. The C-index for OS was 0.725 (95% CI: 0.706-0.741) in the training cohort and 0.710 (95% CI: 0.683-0.737) in the validation cohort. The AUC and calibration plots of 3-, 5-, and 10-year OS rates showed that the nomogram had good predictive power. DCA demonstrated that the nomogram constructed in this study could provide a clinical net benefit.

Conclusion

We created a novel nomogram of prognostic factors for SGC, which more accurately and comprehensively predicted 3-, 5-, and 10-year OS in SGC patients. This can help clinicians identify high-risk patients as early as possible, carry out personalized treatment, follow-up, and monitoring, and improve the survival rate of SGC patients.

Clinical Features and Prognosis of Young and Middle-Aged Adults With Skin Sebaceous Adenocarcinoma

BACKGROUND

Sebaceous adenocarcinoma (SAC) mostly occurs in the elderly, and SAC in young and middle-aged population is inadequately investigated.

OBJECTIVE

To explore the clinical features and prognosis of young and middle-aged adults with SAC.

MATERIALS AND METHODS

Patients with skin SAC between ages 18 and 59 years from the Surveillance, Epidemiology, and End Results database (1975-2016) were eligible for this study.

RESULTS

Seven hundred thirty-nine cases were identified. The proportion of extraocular SAC in the nonelderly increased from 1975-2005 to 2006-2016 ( p = .001), male predominance was observed in overall patients whereas female predominance in Asian population, and young patients had more head and neck SAC than middle-aged patients ( p = .014). The prognosis of young patients was better than middle-aged patients ( p = .004). Other independent prognostic factors included sex, marital status, tumor size, surgery, chemotherapy, and multiple primary cancer history.

CONCLUSION

An increasing proportion of extraocular SAC was observed in young and middle-aged patients, and the young developed more head and neck SAC than the middle-aged. Female predominance was found in Asian population, and female patients had better prognosis. Younger age and married status indicated better prognosis, and around 20% of young and middle-aged patients might have poorer survival because of Muir-Torre syndrome.

Rare Cutaneous Malignancies in Skin of Color

BACKGROUND

There is a scarcity of information regarding the clinical characteristics of rare cutaneous malignancies in skin of color that has yet to be comprehensively explored.

OBJECTIVE

To review and compile the racial differences in epidemiology, clinical presentation, histology, treatments, and outcomes of 3 rare skin cancers: dermatofibrosarcoma protuberans (DFSP), Merkel cell carcinoma (MCC), and sebaceous carcinoma (SC).

METHODS

Several searches with keywords denoting specific skin cancer type and race were conducted on PubMed to complete this narrative review.

RESULTS

We analyzed 50 sources that were relevant to the initial objective.

CONCLUSION

The literature demonstrates that there are nuances in DFSP, MCC, and SC unique to African Americans, Asians/Pacific Islanders, and Hispanics that may differ significantly from Caucasian counterparts. African Americans consistently suffer from the worst clinical outcomes in all 3 rare cutaneous malignancies reviewed. Greater physician awareness and knowledge of the discussed racial differences is the preliminary step to address these disparities.

Diffuse pattern, orbital invasion, perineural invasion and Ki-67 are associated with nodal metastasis in patients with eyelid sebaceous carcinoma

Background

Metastasis dominates the prognosis of eyelid sebaceous carcinoma (SC). This study aimed to explore risk factors for nodal metastasis and develop a nomogram to predict nodal metastasis in patients with eyelid SC.

Methods

A retrospective case–control study was performed, comprising 320 patients with eyelid SC. Cox analyses were employed to investigate predictors of metastasis-free survival (MFS), and a nomogram was established and validated by the bootstrap method.

Results

Forty patients (12.5%) developed nodal metastasis during a median follow-up of 48.0 months, and the median period between the initial treatment and first nodal metastasis was 18.5 months (range 6.0–80.0 months). The 1-year, 3-year and 5-year nodal metastasis rates were 5.5%, 12.5% and 15.4%, respectively. Diffuse pattern (HR: 4.34, 95% CI 1.75 to 10.76, p=0.002), orbital invasion at presentation (HR: 3.22, 95% CI 1.42 to 7.33, p=0.005), perineural invasion (HR: 3.24, 95% CI 1.11 to 9.49, p=0.032) and high Ki-67 percentage (HR: 1.03, 95% CI 1.01 to 1.05, p<0.001) were identified as independent risk factors for nodal metastasis. A nomogram that integrated these four factors had a C-index of 0.785, demonstrating a strong power in predicting nodal metastasis of eyelid SC.

Conclusions

We identified risk factors for nodal metastasis and developed a nomogram to provide individualised estimates of nodal metastasis for eyelid SC patients and guide postoperative management. This nomogram contained clinicopathological factors besides the T category of the TNM staging system and suggesting great clinical value.

Outcome after treatment for sebaceous carcinoma: A multicenter study

Background

Sebaceous carcinoma (SC) is a rare malignant tumour whereby, comprehensive long‐term data are scarce. This study aimed to assess the outcome of patients treated with resection for SC.

Methods

Patients treated at four tertiary centres were included. Cumulative incidence curves were calculated for recurrences.

Results

A total of 100 patients (57 males, 57%) were included with 103 SCs. The median age was 72 (range, 15–95) years with a median follow‐up of 52 (interquartile range [IQR], 24‐93) months. Most SCs were located (peri)ocular (49.5%). Of all SCs, 17 locally recurred (16.5%) with a median time to recurrence of 19 (IQR, 8–29) months. The cumulative incidence probability for recurrence was statistically higher for (peri)ocular tumours (p = 0.005), and for positive resection margins (p = 0.001). Two patients presented with lymph node metastases and additional seven patients (8.7%) developed lymph node metastases during follow‐up with a median time to metastases of 8 (IQR, 0.5–28) months. Three patients had concurrent in‐transit metastases and one patient also developed liver and bone metastases during follow‐up.

Conclusion

SC is a rare, yet locally aggressive tumour. Positive resection margins and (peri)ocular SCs are more frequently associated with local recurrence. SC infrequently presents with locoregional or distant metastases.

Pagetoid tumour spread in periocular sebaceous gland carcinoma: a comparative analysis in 130 patients

PURPOSE

To compare the clinical features, histopathology features, treatment, and prognosis of patients with and without pagetoid tumour spread secondary to periocular sebaceous gland carcinoma (SGC).

METHODS

Retrospective study of 130 patients with SGC who underwent conjunctival map biopsy.

RESULTS

Of the 130 patients with SGC, 30 (23%) patients had histopathology proven pagetoid tumour spread. On multivariate analysis, increasing tumour basal diameter (p < 0.001) was predictive of pagetoid tumour spread. The odds ratio for tumour basal diameter in prediction of map biopsy positivity for pagetoid tumour spread was 1.13 (95% CI, 1.07-1.19). The sensitivity and specificity of clinicopathological correlation of pagetoid tumour spread was 57 and 90%. Overall, globe salvage was better in those without pagetoid tumour spread compared to those with pagetoid tumour spread (95% vs 33%; p < 0.0001). Comparing those with pagetoid tumour spread vs those without, the 5-year Kaplan-Meier estimate of systemic metastasis was 21% vs 4% (p = 0.15) and death was 28% vs 4% (p = 0.21), respectively.

CONCLUSION

Increasing tumour basal diameter can predict the risk of pagetoid tumour spread. Every mm increase in tumour basal diameter increases the risk of pagetoid tumour spread by 13%. Map biopsy is recommended for all patients with periocular SGC's. Though the globe salvage rates are poor in those with pagetoid tumour spread, the occurrence of systemic metastasis and death are not significantly higher compared to those without pagetoid tumour spread.

Epidemiological Profile and Clinical Stage at Presentation of Eyelid Malignancies in a Multi-Ethnic Country

ABSTRACT

Eyelid malignancies are frequently seen in clinical practice. There is a lack of studies that have assessed the features of these lesions in mixed population countries. The epidemiologic profile, clinical stage at presentation, management, and outcomes of patients with eyelid malignancies were assessed, in order to better understand the features of these lesions in a multi-ethnic country. The medical records of patients who underwent eyelid tumor excision in a tertiary service in Brazil, from 2014 to 2019 were retrospectively reviewed. It was recorded for each patient: age, gender, time of onset, location, diagnosis, management, and follow-up. The medical records of 298 patients who presented with eyelid tumors were evaluated and 67 (22.4%) were malignant. The mean age of patients with malignancies was 52.93 years and 50% were male. Basal cell carcinoma was the most prevalent (61.2%), followed by squamous cell carcinoma (SCC) (29.9%) and sebaceous gland carcinoma (3%). The average time it took from appearance to surgical treatment was 3 years; the lower eyelid was the most affected for both basal cell carcinoma and SCC; 70% of SCCs were locally invasive at presentation and metastasis occurred in 15%. Basal cell carcinoma was the most common eyelid malignancy observed, however, its frequency was lower when compared to other western countries. The advanced stage at presentation may reflect the lack of education of the population to seek early care, and the lack of specialized tertiary centers in remote areas, resulting in delayed diagnosis.

Sebaceous Carcinoma of the Eyelid: A Systematic Review and Meta-Analysis

BACKGROUND

Sebaceous carcinoma (SC) of the eyelid is a rare, aggressive malignancy associated with high rates of recurrence, metastasis, and tumor-related mortality.

OBJECTIVE

Provide a collective analysis of clinical presentations, management techniques, and outcomes, and compare outcomes of common treatment methods.

METHODS AND MATERIALS

Observational studies reporting management and outcomes of SC of the eyelid were included. Patient and clinical data were extracted, and meta-analysis of proportions was performed.

RESULTS

One thousand three hundred thirty-three subjects were included with a mean age of 65.2 years and 803 (60.2%) women. Of 647 initial diagnoses reported, 277 (42.8%) were correct, and the mean diagnostic delay was 14.7 months (range 8.5-34.8). The tumor location was reported in 1,246 subjects and involved the upper eyelid in 780 (62.6%), lower eyelid in 409 (32.8%), and 57 (4.8%) involved both. Overall rates of recurrence, metastasis, and tumor-related mortality were 15.9%, 12.1%, and 6.2%, respectively. There were no statistically significant differences in wide local excision (WLE) versus Mohs micrographic surgery (MMS) outcomes.

CONCLUSION

Sebaceous carcinoma of the eyelid is more common in women, on the upper eyelid, and is frequently misdiagnosed initially. Rate of recurrence, metastasis, and tumor-related mortality were similar in subjects managed with WLE versus MMS.

Management of recurrent sebaceous gland carcinoma

OBJECTIVE

To evaluate the incidence and management of recurrent periocular sebaceous gland carcinoma at a tertiary ocular oncology service in the United Kingdom.

METHODS

This was a retrospective cohort study of 62 patients with sebaceous gland carcinoma treated between 2004 and 2017. A total of 10 eyes were treated for local recurrence. The following variables were recorded: age and sex of patient; tumour location, histological subtype; recurrence type; treatment and outcome.

RESULTS

Of the 62 cases with eyelid SGC, 10 (16%) had recurrences during the study period and satisfied inclusion criteria. There were six (60%) females and four males in the recurrent group. The mean time interval between initial excision and tumour recurrence was 37 months (median 23 months; range 4 to 84 months). Four patients received cryotherapy to the lids and conjunctiva to control recurrent disease and two patients were treated with topical or intralesional chemotherapy. Four patients (40%) underwent orbital exenteration during the study period. Metastasis occurred in 20% over a mean follow-up of 113 months (median 106; range 47-184 months).

CONCLUSIONS

The risk factors for local recurrence of SGC after wide excision with paraffin section control were reported, and an approach to these recurrent lesions was proposed. The results of this study will help guide surgeons dealing with the medical and surgical conundrum of recurrent disease. The risk of recurrence is highest in the first 2 years after initial excision.

Eyelid sebaceous gland carcinoma: An assessment of the T classification of the American Joint Committee of Cancer TNM staging system 8th versus 7th edition

PURPOSE

To assess the prognostic values of the T classification of the 8th edition of the American Joint Committee of Cancer staging system and compare it to the 7th edition.

METHODS

Multicenter retrospective study of patients with eyelid sebaceous gland carcinoma. The primary outcome measure was the differences between outcomes when tumors were staged with either 7th or 8th edition. The measures evaluated included presenting features, management, histopathology, metastasis, recurrence, and mortality.

RESULTS

Of the 60 patients (median age 73 years), 31 (51.7%) were females. A change in T staging occurred in 39 patients (65%) when the 8th edition was applied. Advanced categories (T3/T4) were significantly associated with nodal metastasis (p = 0.037) using the 8th edition criteria but not with the 7th edition (p = 0.066). The 8th edition T categorization significantly correlated with eye survival (p = 0.022) while the 7th edition did not (p = 0.058). Applying the 8th edition, category T4 at presentation was associated with a higher risk of nodal metastasis (p = 0.037) but not associated with local recurrence, distant metastasis, or tumor-related death (p = 0.281, p = 0.737, p = 0.319, respectively). T3/T4 category tumors were significantly associated with poor tumor differentiation (p = 0.001), and papillary histologic pattern (p = 0.024) but not with pagetoid spread (p = 0.056).

CONCLUSION

The application of the 8th edition AJCC staging system for eyelid SGC may accurately predict nodal metastasis. Local recurrence and distant metastasis were not significantly associated with T classification, using either edition. Poor tumor differentiation and papillary pattern were associated with T3/T4 categories suggesting that pathological features may assist in determining prognosis.

Nordic treatment practices survey and consensus for treatment of eyelid sebaceous carcinoma

Background

The purpose was to describe the Nordic treatment practices and to reach a Nordic consensus for the treatment of sebaceous eyelid carcinoma.

Methods

The treatment practices data was collected by a questionnaire with 37 questions to the Nordic oculoplastic surgeons and analyzed. A PubMed MEDLINE database search was done to gather data on the published treatment practices and recommendations. A working group that consisted of in minimum one senior consultant from each leading Nordic University Eye Hospital was assigned. A structured interactive method was used to establish the consensus.

Results

Twenty-four doctors responded to the questionnaire. 23/24 (96%) of the respondents took a biopsy before surgery. Regional lymph node scanning was routinely done by 14/23 (61%) and a systemic screening of a metastatic disease by 13/23 (57%). 6/22 (27%) never took conjunctival mapping biopsies and 12/23 (52%) never screened for Muir- Torre. Respondents used Mohs surgery, frozen section or multi-stage excision with delayed closure, and 5–6 mm was the mostly preferred margin. Sentinel lymph node biopsy was a possible option for 9/22 (41%) and cryotherapy and Mitomycin C for 6/22 (27%) respondents. 50% of respondents considered radiation as a treatment option. 15/16 (94%) respondents always followed-up their patients, most for 5 years. Two thirds scanned regional lymph nodes during the follow-up. Consensus was reached for 18 statements representing three domains: preoperative work-up, treatment and follow-up.

Conclusion

Treatment practices differ in between the five Nordic countries which have similar public health care systems. In the article the authors present a Nordic consensus for the treatment of eyelid sebaceous carcinoma.

Cutaneous sebaceous carcinoma

Cutaneous sebaceous carcinoma occurs almost exclusively on the head and neck and has a significant propensity for recurrence and metastasis. It is easily mistaken for benign conditions, resulting in inappropriate management. Thus, it is important to maintain a high index of suspicion. Despite previous reports, sebaceous carcinoma may occur with similar frequency in Asians and whites. Recent genetic data suggest there are multiple mutational groups of sebaceous carcinoma, paving the way for targeted treatment. After a diagnosis, investigations for staging and for Muir-Torre syndrome should be considered. The available evidence on the treatment options for sebaceous carcinoma is discussed, and specific recommendations for management are made.

Sebaceous carcinoma: evidence-based clinical practice guidelines

Sebaceous carcinoma usually occurs in adults older than 60 years, on the eyelid, head and neck, and trunk. In this Review, we present clinical care recommendations for sebaceous carcinoma, which were developed as a result of an expert panel evaluation of the findings of a systematic review. Key conclusions were drawn and recommendations made for diagnosis, first-line treatment, radiotherapy, and post-treatment care. For diagnosis, we concluded that deep biopsy is often required; furthermore, differential diagnoses that mimic the condition can be excluded with special histological stains. For treatment, the recommended first-line therapy is surgical removal, followed by margin assessment of the peripheral and deep tissue edges; conjunctival mapping biopsies can facilitate surgical planning. Radiotherapy can be considered for cases with nerve or lymph node involvement, and as the primary treatment in patients who are ineligible for surgery. Post-treatment clinical examination should occur every 6 months for at least 3 years. No specific systemic therapies for advanced disease can be recommended, but targeted therapies and immunotherapies are being developed.

Periocular intraepithelial sebaceous neoplasia: critical appraisal of nomenclature and prognostic importance

Intraepithelial sebaceous neoplasia in the forms (or subclassification) of pagetoid spread and carcinoma in situ is a common feature of periocular sebaceous carcinoma and is associated with less favourable outcomes. Seminal studies of periocular sebaceous carcinoma in the 1980s indicated that the two patterns of intraepithelial spread had differing influences on prognosis with pagetoid invasion being worse. Later studies reported conflicting results, but careful inspection of those studies revealed considerable variation in what was meant by pagetoid invasion. Different interpretations of pagetoid spread continue, leading to ambiguous results in clinical studies and miscommunication with potential unintended decisions affecting clinical management. This paper reviews the background leading to the frequent interchangeable use of pagetoid spread with in situ sebaceous carcinoma and how this problem confounds interpretation of clinical studies. The author recommends that for effective communication, all morphological patterns of in situ spread of sebaceous carcinoma fall under the term intraepithelial sebaceous neoplasia, which can be accompanied by subclassification whenever desired.

The practice patterns in the management of sebaceous carcinoma of the eyelid in the Asia Pacific region

PURPOSE

To determine the practice patterns of ophthalmic plastic surgeons regarding the management of eyelid sebaceous carcinoma (SC).

METHODS

An electronic survey was distributed to oculoplastic surgical colleagues in the Asia Pacific region requesting clinical information and treatment approaches to SC.

RESULTS

The responses from 192 respondents from the Asia Pacific region was included and analyzed in this study. For initial diagnosis, most surgeons selected incisional biopsy (55%), followed by complete excision (35%). Initial workup was mainly by palpation of lymph nodes, chest X-ray, and computerized tomography scan (CT-scan) of the orbit. Conjunctival map biopsy was done in selected cases. Sentinel lymph node biopsy (SLNB) was done mainly for tumors larger than 10 mm. Management was mainly by surgical excision (5 mm margin) combined with adjuvant therapy in some cases, with radiotherapy being the most common. Margin status was determined most frequently by frozen section as evaluated by the pathologist (57%) followed by Mohs micrographic surgery (18%). Surveillance was based mainly on physical examination alone.

CONCLUSION

The Asia Pacific oculoplastic surgeons prefer incisional biopsy for lesions suspicious of SC prior to definitive surgery. This is in contrast to survey results previously reported in other populations. Frozen section control (done by an oculoplastic surgeon with pathology support) is most commonly used for margin control and conjunctival map biopsies are done only in selected cases. Despite the potential benefits of SLNB, access and expertise in this area is currently lacking in the Asia Pacific region.

Prognostic factors for local recurrence, metastasis and survival for sebaceous carcinoma of the eyelid: observations in 100 patients

Background/aims

To validate the predictive value of the American Joint Committee on Cancer (AJCC) 8th-edition classification for local recurrence, metastasis and survival in patients with eyelid sebaceous carcinoma.

Methods

We performed a retrospective review of 100 consecutive patients with eyelid sebaceous carcinoma. Eyelid carcinomas were staged according to the AJCC 7th-edition and 8th-edition criteria. Associations between T and N categories and disease-related outcomes including local recurrence, lymph node metastasis, distant metastasis and survival were evaluated.

Results

60 women and 40 men had a median age of 67 years (range, 41–94 years). The proportions of patients who experienced local recurrence, lymph node metastasis, distant metastasis and death from disease were 6%, 21%, 7% and 6%, respectively. Two-year and 5-year disease-specific survival (DSS) rates were 93.8% and 92.0%, respectively. There were significant correlations between (1) T2c or worse category and lymph node metastasis (p=0.04) and distant metastasis (p=0.01), (2) T3b or worse category and local recurrence (p=0.01) and death from disease (p=0.01) and (3) N1 category at presentation and distant metastasis (p<0.01) and death from disease (p<0.01). The AJCC 8th-edition classification showed a better homogeneity of the T-category distribution (p<0.01) and a slightly higher discrimination ability for lymph node metastasis (C=0.734 vs C=0.728) than the 7th-edition.

Conclusions

T and N categories per AJCC 8th-edition classification are predictive of local recurrence, metastasis and DSS outcomes for eyelid sebaceous carcinoma. Surgeons should perform strict surveillance testing for nodal and systemic metastases in patients with T2c or worse T category and/or N1 disease at presentation.