In-depth analysis of immunohistochemistry concordance in biopsy-resection pairs of bronchial carcinoids.

Primary diagnosis of bronchial carcinoids (BC) is always made on biopsies and additional immunohistochemistry (IHC) is often necessary. In the present study we investigated the concordance of common diagnostic (synaptophysin, chromogranin, CD56 and INSM-1) and potential prognostic (OTP, CD44, Rb and p16) IHC markers between the preoperative biopsies and resections of in total 64 BCs, 26 typical (41 %) and 38 atypical (59 %) carcinoid tumors. Synaptophysin and chromogranin had 100 % concordance in all resected carcinoids and paired diagnostic biopsies. Synaptophysin was not affected by variable expression in biopsies compared to chromogranin, CD56 and INSM-1. Notably, INSM-1 IHC was false negative in 8 % of biopsies. Of the novel and potential prognostic markers, only CD44 showed 100 % concordance between biopsies and resections, while OTP showed two (4 %) false negative results in paired biopsies. While Rb IHC was false negative in 8 % of biopsies, no strong and diffuse pattern of p16 expression was observed. In this study, most false negative IHC results (85 %, 22/26) were observed in small flexible biopsies. Taken together, our data suggest excellent concordance of synaptophysin and CD44 on the preoperative biopsy samples, while other neuroendocrine markers, Rb and OTP should be interpreted with caution, especially in small biopsies.

Oncological healthcare providers' perspectives on appropriate melanoma survivorship care: a qualitative focus group study.

BACKGROUND: The increasing group of melanoma survivors reports multiple unmet needs regarding survivorship care (SSC). To optimise melanoma SSC, it is crucial to take into account the perspectives of oncological healthcare providers (HCPs) in addition to those of patients. The aim of this study is to gain an in-depth understanding of HCPs' perspectives on appropriate melanoma SSC. METHODS: Four online focus groups were conducted with mixed samples of oncological HCPs (dermatologists, surgeons, oncologists, oncological nurse practitioners, support counsellors and general practitioners) (total n = 23). A topic guide was used to structure the discussions, focusing on perspectives on both SSC and survivorship care plans (SCPs). All focus groups were recorded, transcribed verbatim, and subjected to an elaborate thematic content analysis. RESULTS: Regarding SSC, HCPs considered the current offer minimal and stressed the need for broader personalised SSC from diagnosis onwards. Although hardly anyone was familiar with SCPs, they perceived various potential benefits of SCPs, such as an increase in the patients' self-management and providing HCPs with an up-to-date overview of the patient's situation. Perceived preconditions for successful implementation included adequate personalisation, integration in the electronic health record and ensuring adequate funding to activate and provide timely updates. CONCLUSIONS: According to HCPs there is considerable room for improvement in terms of melanoma SSC. SCPs can assist in offering personalised and broader i.e., including psychosocial SSC. Aside from personalisation, efforts should be focused on SCPs' integration in clinical practice, and their long-term maintenance.

A Multimodal Biomarker Predicts Dissemination of Bronchial Carcinoid.

Background: Curatively treated bronchial carcinoid tumors have a relatively low metastatic potential. Gradation into typical (TC) and atypical carcinoid (AC) is limited in terms of prognostic value, resulting in yearly follow-up of all patients. We examined the additional prognostic value of novel immunohistochemical (IHC) markers to current gradation of carcinoids. Methods: A retrospective single-institution cohort study was performed on 171 patients with pathologically diagnosed bronchial carcinoid (median follow-up: 66 months). The risk of developing distant metastases based on histopathological characteristics (Ki-67, p16, Rb, OTP, CD44, and tumor diameter) was evaluated using multivariate regression analysis and the Kaplan−Meier method. Results: Of 171 patients, seven (4%) had disseminated disease at presentation, and 164 (96%) received curative-intent treatment with either endobronchial treatment (EBT) (n = 61, 36%) or surgery (n = 103, 60%). Among the 164 patients, 13 developed metastases at follow-up of 81 months (IQR 45−162). Univariate analysis showed that Ki-67, mitotic index, OTP, CD44, and tumor diameter were associated with development of distant metastases. Multivariate analysis showed that mitotic count, Ki-67, and OTP were independent risk factors for development of distant metastases. Using a 5% cutoff for Ki-67, Kaplan−Meier analysis showed that the risk of distant metastasis development was significantly associated with the number of risk predictors (AC, Ki-67 ≥ 5%, and loss of OTP or CD44) (p < 0.0001). Six out of seven patients (86%) with all three positive risk factors developed distant metastasis. Conclusions: Mitotic count, proliferation index, and OTP IHC were independent predictors of dissemination at follow-up. In addition to the widely used carcinoid classification, a comprehensive analysis of histopathological variables including Ki-67, OTP, and CD44 could assist in the determination of distant metastasis risks of bronchial carcinoids.

Diagnosis of atypical carcinoid can be made on biopsies > 4 mm2 and is accurate.

In the 2021 WHO thoracic tumors, gradation of lung carcinoids in biopsies is discouraged. We hypothesized that atypical carcinoid (AC) could be reliably diagnosed in larger preoperative biopsies. Biopsy-resection paired specimens of carcinoid patients were included, and definitive diagnosis was based on the resection specimen according to the WHO 2021 classification. A total of 64 biopsy-resection pairs (26 typical carcinoid (TC) (41%) and 38 AC (59%)) were analyzed. In 35 patients (55%), tumor classification between the biopsy and resection specimen was concordant (26 TC, 9 AC). The discordance in the remaining 29 biopsies (45%, 29 TC, 0 AC) was caused by misclassification of AC as TC. In biopsies measuring < 4 mm2, 15/15 AC (100%) were misclassified compared to 14/23 AC (61%) of biopsies ≥ 4 mm2. Categorical concordance of Ki-67 in biopsy-resection pairs at threshold of 5% was 68%. Ki-67 in the biopsy was not of additional value to discriminate between TC and AC, irrespective of the biopsy size. Atypical carcinoid is frequently missed in small bronchial biopsies (< 4 mm2). If the carcinoid classification is clinically relevant, a cumulative biopsy size of at least 4 mm2 should be considered. Our study provides strong arguments to make the diagnosis of AC in case of sufficient mitosis for AC on a biopsy and keep the diagnosis "carcinoid NOS" for carcinoids with ≤ 1 mitosis per 2 mm2. Ki-67 has a good concordance but was not discriminative for definitive diagnosis.

Real-world healthcare costs of localized and regionally advanced cutaneous melanoma in the Netherlands.

The aim of this study was to provide insight into real-world healthcare costs of patients initially diagnosed with localized or regionally advanced melanoma in three Dutch hospitals between 2003 and 2011. Patients were stratified according to their stage at diagnosis and recurrence status. Costs were calculated by applying unit costs to individual patient resource use and reported for the full disease course, the initial treatment episode, and treatment episodes for disease recurrence (stratified by type of recurrence). We included 198 patients with localized melanoma and 98 patients with regionally advanced melanoma. Total costs were much higher for patients with disease recurrence than for patients without disease recurrence: €20 007 versus €3032 for patients with localized melanoma and €19 519 versus €5951 for patients with regionally advanced melanoma. This was owing to the costs of disease recurrence because the costs of the initial treatment were comparable between patients with and without disease recurrence. Costs of disease recurrence were dependent on the type of recurrence: €4414, €4604, €8129 and €10 393 for a local recurrence, intralymphatic metastases, regional lymph node metastases and distant metastases, respectively. In conclusion, healthcare costs of patients with localized and regionally advanced melanoma were rather low for the initial treatment. Costs became, however, more substantial in case of disease recurrence. In the context of a rapidly changing treatment paradigm, it remains crucial to monitor treatment outcomes as well as healthcare expenditures.

Preoperative breast MRI in management of patients with needle biopsy-proven ductal carcinoma in situ (DCIS).

BACKGROUND: In 20-25% of patients with biopsy-proven DCIS underestimation occurs. Sentinel lymph node biopsy (SLNB) is offered to patients with biopsy-proven ductal carcinoma in situ (DCIS) and a high risk of occult invasive cancer. However, assessment of high risk is controversial. We aimed to improve selection of patients for SLNB with preoperative breast magnetic resonance imaging (MRI). METHODS: In this prospective observational study, MRI was offered to all subsequent patients with a biopsy-proven DCIS admitted to a large Dutch teaching hospital between April 2012 and March 2017. MRI images were analysed for signs of invasive cancer and the results were compared with the pathologic results after surgical treatment. The diagnostic accuracy of additional MRI in detecting occult invasive cancer was determined. RESULTS: Of 211 patients eligible for additional MRI analysis, 149 underwent breast MRI. The majority (67%) received breast-conserving therapy, and the underestimation rate was 20%. Subsequent to MRI analysis, 20 additional invasive diagnostic procedures were performed. Occult invasive cancer was suspected on MRI in 46 patients (31%) and was confirmed in 18 (12%). In this study, breast MRI had a sensitivity of 67%, a specificity of 77%, and a true negative rate of 91%. CONCLUSION: Preoperative breast MRI cannot reliably predict the presence of invasive cancer in patients with biopsy proven DCIS. Therefore, it cannot be used to in the selection of patients for a SLNB.

Efficacy of Internet-Based Cognitive Behavioral Therapy for Treatment-Induced Menopausal Symptoms in Breast Cancer Survivors: Results of a Randomized Controlled Trial.

PURPOSE: We evaluated the effect of Internet-based cognitive behavioral therapy (iCBT), with or without therapist support, on the perceived impact of hot flushes and night sweats (HF/NS) and overall levels of menopausal symptoms (primary outcomes), sleep quality, HF/NS frequency, sexual functioning, psychological distress, and health-related quality of life in breast cancer survivors with treatment-induced menopausal symptoms. PATIENTS AND METHODS: We randomly assigned 254 breast cancer survivors to a therapist-guided or a self-managed iCBT group or to a waiting list control group. The 6-week iCBT program included psycho-education, behavior monitoring, and cognitive restructuring. Questionnaires were administered at baseline and at 10 weeks and 24 weeks postrandomization. We used mixed-effects models to compare the intervention groups with the control group over time. Significance was set at P < .01. An effect size (ES) of .20 was considered small, .50 moderate and clinically significant, and .80 large. RESULTS: Compared with the control group, the guided and self-managed iCBT groups reported a significant decrease in the perceived impact of HF/NS (ES, .63 and .56, respectively; both P < .001) and improvement in sleep quality (ES, .57 and .41; both P < .001). The guided group also reported significant improvement in overall levels of menopausal symptoms (ES, .33; P = .003), and NS frequency (ES, .64; P < .001). At longer-term follow-up (24 weeks), the effects remained significant, with a smaller ES for the guided group on perceived impact of HF/NS and sleep quality and for the self-managed group on overall levels of menopausal symptoms. Additional longer-term effects for both intervention groups were found for hot flush frequency. CONCLUSION: iCBT, with or without therapist support, has clinically significant, salutary effects on the perceived impact and frequency of HF/NS, overall levels of menopausal symptoms, and sleep quality.

Stage-specific disease recurrence and survival in localized and regionally advanced cutaneous melanoma.

OBJECTIVE: To investigate stage-specific survival from diagnosis, stage-specific disease recurrence, and post-recurrence survival in patients diagnosed with localized and regionally advanced cutaneous melanoma. METHODS: A retrospective, observational cohort study was conducted in six Dutch hospitals. We included patients with a first diagnosis of stage I, II, or III melanoma between January 2003 and December 2011. Descriptive statistics were used to summarize time to first recurrence and type of first recurrence. Overall survival (OS) from diagnosis and post-recurrence OS were assessed using the Kaplan-Meier method. RESULTS: A total of 3,093 patients had a first diagnosis of stage I (n = 2,299), II (n = 565), or III (n = 229) melanoma. Median OS was not yet reached for patients with stage I, 9.5 years for patients with stage II, and 6.8 years for patients with stage III. Fifty-seven patients (8%) with stage IB, 137 patients (29%) with stage II, and 81 patients (47%) with stage III developed disease recurrence. Median time to first recurrence was 2.8, 1.5, and 1.0 years for patients with stage IB, II, and III, respectively. Most patients (79%) developed regional lymph node or distant metastases as first recurrence. Median post-recurrence OS was 2.8, 3.9, and 0.5 years for patients with intralymphatic, regional lymph node, and distant metastases, respectively. CONCLUSION: A substantial number of patients developed disease recurrence. Of these patients, a considerably high proportion developed distant metastases which had a great impact on survival. Identifying disease recurrence at its earliest stage is crucial because metastatic melanoma remains incurable for most patients.

Sexual Functioning and Relationship Satisfaction of Partners of Breast Cancer Survivors Who Receive Internet-Based Sex Therapy.

As part of a larger, randomized controlled trial, we evaluated longitudinally the sexual functioning and relationship satisfaction of 69 partners of breast cancer (BC) survivors who received Internet-based cognitive behavioral therapy (CBT) for sexual dysfunction. The findings suggest that Internet-based CBT positively affects the partners' immediate post-CBT and longer-term overall sexual satisfaction, sexual intimacy, and sexual relationship satisfaction. No sustained changes in other areas of sexual functioning were observed. Our CBT program was focused primarily on the sexual health of the BC survivors. We recommend that future programs include more psychoeducational and behavioral elements targeted at the partners.

Endobronchial Treatment for Bronchial Carcinoid: Patient Selection and Predictors of Outcome.

BACKGROUND: Traditionally, surgical resection is the preferred treatment for typical carcinoids and atypical carcinoids located in the lungs. Recently however, several studies have shown excellent long-term outcome after endobronchial treatment of carcinoid tumors located in the central airways. This study investigates clinical and radiological features as predictors of successful endobronchial treatment in patients with a bronchial carcinoid tumor. OBJECTIVES: To identify clinical and radiological features predictive of successful endobronchial treatment in patients with bronchial carcinoid. METHODS: This analysis was performed in a cohort of patients with typical and atypical bronchial carcinoid referred for endobronchial treatment. Several patient characteristics, radiological features, and histological grade (typical or atypical carcinoid) were tested as predictors of successful endobronchial treatment. RESULTS: One hundred and twenty-five patients with a diagnosis of bronchial carcinoid underwent endobronchial treatment. On multivariate analysis, a tumor diameter <15 mm (odds ratio 0.09; 95% confidence interval 0.02-0.5; p = <0.01) and purely intraluminal growth on computer tomography (CT scan) (odds ratio, 9.1; 95% confidence interval 1.8-45.8; p = <0.01) were predictive of radical endobronchial treatment. The success rate for intraluminal tumors with a diameter <20 mm was 72%. CONCLUSIONS: Purely intraluminal disease and tumor diameter on CT scan seem to be independent predictors for successful endobronchial treatment in patients with bronchial carcinoid. Based on these data, patients with purely intraluminal carcinoid tumors with a diameter <20 mm on CT scan are good candidates for endobronchial treatment, regardless of histological grade. In contrast, all patients with a tumor diameter ≥20 mm should be directly referred for surgery.

Internet-Based Cognitive Behavioral Therapy Realizes Long-Term Improvement in the Sexual Functioning and Body Image of Breast Cancer Survivors.

The study aim was to evaluate the long-term efficacy of Internet-based cognitive behavioral therapy (CBT) for sexual dysfunctions in 84 breast cancer survivors. The positive effects of the intervention on overall sexual functioning, sexual desire, sexual arousal, vaginal lubrication, discomfort during sex, sexual distress, and body image observed immediately posttreatment were maintained at three- and nine-month follow-ups. Although sexual pleasure decreased during follow-up, it did not return to baseline levels. Our findings provide evidence that Internet-based CBT has a sustained, positive effect on sexual functioning and body image of breast cancer survivors with a sexual dysfunction.

Efficacy of Internet-Based Cognitive Behavioral Therapy in Improving Sexual Functioning of Breast Cancer Survivors: Results of a Randomized Controlled Trial.

Purpose We evaluated the effect of Internet-based cognitive behavioral therapy (CBT) on sexual functioning and relationship intimacy (primary outcomes) and body image, menopausal symptoms, marital functioning, psychological distress, and health-related quality of life (secondary outcomes) in breast cancer survivors (BCSs) with a DSM-IV diagnosis of a sexual dysfunction. Patients and Methods We randomly assigned 169 BCSs to either Internet-based CBT or a waiting-list control group. The CBT consisted of weekly therapist-guided sessions, with a maximum duration of 24 weeks. Self-report questionnaires were completed by the intervention group at baseline (T0), midtherapy (T1), and post-therapy (T2) and at equivalent times by the control group. We used a mixed-effect modeling approach to compare the groups over time. Results Compared with the control group, the intervention group showed a significant improvement over time in overall sexual functioning (effect size for T2 [EST2] = .43; P = .031), which was reflected in an increase in sexual desire (EST1 = .48 and EST2 = .72; P < .001), sexual arousal (EST2 = .50; P = .008), and vaginal lubrication (EST2 = .46; P = .013). The intervention group reported more improvement over time in sexual pleasure (EST1 = .32 and EST2 = .62; P = .001), less discomfort during sex (EST1 = .49 and EST2 = .66; P = .001), and less sexual distress (EST2 = .59; P = .002) compared with the control group. The intervention group reported greater improvement in body image (EST2 = .45; P = .009) and fewer menopausal symptoms (EST1 = .39; P = .007) than the control group. No significant effects were observed for orgasmic function, sexual satisfaction, intercourse frequency, relationship intimacy, marital functioning, psychological distress, or health-related quality of life. Conclusion Internet-based CBT has salutary effects on sexual functioning, body image, and menopausal symptoms in BCSs with a sexual dysfunction.

Non-primary breast malignancies: a single institution's experience of a diagnostic challenge with important therapeutic consequences-a retrospective study.

BACKGROUND: Breast cancer is a common malignancy, but metastases to the breast of extramammary malignancies are very rare. Treatment and prognosis are different. The aim of the study is to report the incidence of lymphomas and metastases to the breast of extramammary malignancies in our 30-year archive. METHODS: The pathology database of a single institute was reviewed for all breast neoplasms which were coded in our system as a metastasis in the period 1985-2014. Metastatic tumors from primary breast carcinoma were excluded. RESULTS: A total of 47 patients were included (7 men/40 women, mean age 63 years). The majority originated from lymphoma (n = 18) and primary melanoma (n = 11). Other primary tumor sites included the ovary (n = 6), lung (n = 6), colon (n = 3), kidney (n = 1), stomach (n = 1), and chorion (n = 1). In 24/47 patients (51 %), metastasis was the first sign of the specific malignant disease. In seven patients (15 %) surgery was performed, the diagnosis of metastatic disease was adjusted in four patients (9 %) postoperatively. CONCLUSIONS: It is important to distinguish lymphomas and metastases to the breast from common primary breast carcinoma for proper treatment and prognosis. Therefore, we emphasize the need for a histological or cytopathological diagnosis before any treatment is commenced. The pathologist plays a key role in considering the diagnosis of metastasis if the histological features are unusual for a primary breast carcinoma. The pathologist should therefore be properly informed by the clinical physician although lymphomas and metastases to the breast are the first presentation of malignant disease in half the cases.

Performance indicators for lung cancer surgery in the Netherlands.

OBJECTIVES: In the Netherlands, surgery for lung cancer is traditionally performed in low-volume hospitals. To assess the need for centralization, we examined early outcome measures and compared results between hospitals and with other European countries. METHODS: Data on patient, tumour and treatment characteristics were retrieved from the Netherlands Cancer Registry. Results were tabulated for 30-day postoperative mortality (POM), major morbidity rate (intrathoracic empyema, bronchopleural fistula or rethoracotomy) and pneumonectomy proportion. Hospital variation was projected using funnel graphs in which the results for individual hospitals are plotted against volume. RESULTS: The study comprised a series of 9579 patients with primary non-small cell lung cancer, diagnosed from 2005 through 2010 and operated in 79 different hospitals. The POM was 2.7% on average and age, gender, period and type of surgery were determined as prognostic factors. Multivariable analysis did not reveal an association with hospital volume (P = 0.34). The POM was higher for operations on Fridays (4.0%) or during weekends (6.8%). Major morbidity was observed after 8.3% of operations and was more frequent after bilobectomy (11.6%) or right pneumonectomy (22%). The pneumonectomy proportion decreased from 18% in 2005 to 11% in 2010. Funnel plots revealed a limited number of significant outliers, despite combining data over a 6-year period. CONCLUSIONS: Results for the Netherlands were similar to those from other European countries. Hospital volume was not associated with early outcome indicators. Quality assessment at the hospital level remains a major challenge given the low frequency of adverse events and the impediments of chance variation.

Adductor longus tendon rupture mistaken for incarcerated inguinal hernia.

An incarcerated inguinal hernia is a common diagnosis, since the risk of an inguinal hernia incarcerating or strangulating is around 0.3-3%. An acute rupture of the adductor longus tendon is rarely seen and mostly affects (semi-) professional sportsmen. We present a case of a patient with an assumed incarcerated inguinal hernia which turned out to be a proximal adductor longus tendon rupture. If patients without a history of inguinal hernia present themselves with acute groin pain after suddenly exorotating the upper leg, a rupture of the adductor longus tendon should be considered. Both surgical and non-surgical treatment can be performed.

Effectiveness of a hospital-based work support intervention for female cancer patients - a multi-centre randomised controlled trial.

OBJECTIVE: One key aspect of cancer survivorship is return-to-work. Unfortunately, many cancer survivors face problems upon their return-to-work. For that reason, we developed a hospital-based work support intervention aimed at enhancing return-to-work. We studied effectiveness of the intervention compared to usual care for female cancer patients in a multi-centre randomised controlled trial. METHODS: Breast and gynaecological cancer patients who were treated with curative intent and had paid work were randomised to the intervention group (n = 65) or control group (n = 68). The intervention involved patient education and support at the hospital and improvement of communication between treating and occupational physicians. In addition, we asked patient's occupational physician to organise a meeting with the patient and the supervisor to make a concrete gradual return-to-work plan. Outcomes at 12 months of follow-up included rate and time until return-to-work (full or partial), quality of life, work ability, work functioning, and lost productivity costs. Time until return-to-work was analyzed with Kaplan-Meier survival analysis. RESULTS: Return-to-work rates were 86% and 83% (p = 0.6) for the intervention group and control group when excluding 8 patients who died or with a life expectancy of months at follow-up. Median time from initial sick leave to partial return-to-work was 194 days (range 14-435) versus 192 days (range 82-465) (p = 0.90) with a hazard ratio of 1.03 (95% CI 0.64-1.6). Quality of life and work ability improved statistically over time but did not differ statistically between groups. Work functioning and costs did not differ statistically between groups. CONCLUSION: The intervention was easily implemented into usual psycho-oncological care and showed high return-to-work rates. We failed to show any differences between groups on return-to-work outcomes and quality of life scores. Further research is needed to study which aspects of the intervention are useful and which elements need improvement. TRIAL REGISTRATION: Nederlands Trial Register (NTR) 1658.

Efficacy of cognitive behavioral therapy and physical exercise in alleviating treatment-induced menopausal symptoms in patients with breast cancer: results of a randomized, controlled, multicenter trial.

PURPOSE: The purpose of our study was to evaluate the effect of cognitive behavioral therapy (CBT), physical exercise (PE), and of these two interventions combined (CBT/PE) on menopausal symptoms (primary outcome), body image, sexual functioning, psychological well-being, and health-related quality of life (secondary outcomes) in patients with breast cancer experiencing treatment-induced menopause. PATIENTS AND METHODS: Patients with breast cancer reporting treatment-induced menopausal symptoms (N=422) were randomly assigned to CBT (n=109), PE (n=104), CBT/PE (n=106), or to a waiting list control group (n=103). Self-report questionnaires were completed at baseline, 12 weeks, and 6 months. Multilevel procedures were used to compare the intervention groups with the control group over time. RESULTS: Compared with the control group, the intervention groups had a significant decrease in levels of endocrine symptoms (Functional Assessment of Cancer Therapy-Endocrine Symptoms; P<.001; effect size, 0.31-0.52) and urinary symptoms (Bristol Female Lower Urinary Tract Symptoms Questionnaire; P=.002; effect size, 0.29-0.33), and they showed an improvement in physical functioning (36-Item Short Form Health Survey physical functioning subscale; P=.002; effect size, 0.37-0.46). The groups that included CBT also showed a significant decrease in the perceived burden of hot flashes and night sweats (problem rating scale of the Hot Flush Rating Scale; P<.001; effect size, 0.39-0.56) and an increase in sexual activity (Sexual Activity Questionnaire habit subscale; P=.027; effect size, 0.65). Most of these effects were observed at both the 12-week and 6-month follow-ups. CONCLUSION: CBT and PE can have salutary effects on endocrine symptoms and, to a lesser degree, on sexuality and physical functioning of patients with breast cancer experiencing treatment-induced menopause. Future work is needed to improve the design and the planning of these interventions to improve program adherence.

[A 73-year-old man with a Merkel cell carcinoma]. / Een 73-jarige man met een merkelcel-carcinoom.

A 73-year-old man had a firm node on his right upper arm, which was caused by a Merkel cell carcinoma (MCC). The diagnosis was made on the basis of characteristic histopathological findings and a surgical excision with wide margins followed. Twenty months later a considerable swelling manifested in the right armpit due to a metastasis. During a CT scan of the thorax and abdomen, 2 suspicious abnormalities were seen in the mesenterial adipose tissue of the left lower abdomen and left perirenal adipose tissue. A tissue sample of the last abnormality taken under CT guidance confirmed this to be a metastasis of the MCC. The patient was irradiated but chose not to have chemotherapy. He died 2 years after the diagnosis. Merkel cell carcinoma is a rare and aggressive malignant skin neoplasm. Early recognition facilitates cure of the disease. Treatment is multidisciplinary, but surgery, either alone or in combination with radiotherapy, forms the basis of treating both the localised and regionalized forms of the disease. Chemotherapy may be used in case of disseminated disease and has a reasonable, albeit temporary, effect. The 10-year survival rate varies from 20-70%, dependent on the stage of the disease.