Atypical fibroxanthoma and pleomorphic dermal sarcoma: Local recurrence and metastasis in a nationwide population-based cohort of 1118 patients

BACKGROUND

The prognosis of patients with atypical fibroxanthoma (AFX) and pleomorphic dermal sarcoma (PDS) remains uncertain and no standardized follow-up programs have been established.

OBJECTIVE

To recommend a standardized follow-up program of patients with AFX and PDS based on nationwide long-term estimates of local recurrence and metastasis.

METHODS

All patients with AFX and PDS in Denmark between 2002 and 2022 were included. Danish National Registries were used to estimate the risks of local recurrence and metastasis for AFX and PDS.

RESULTS

The 5-year risk of local recurrence was 10% for AFX and 17% for PDS. The 5-year risk of metastasis was 0.8% for AFX and 16% for PDS. PDS metastasized within 3 years in >90% of the patients with the lungs as the primary metastasis site (50%). Invasion beyond the subcutis, perineural/intravascular infiltration, and increasing age significantly increased the risk of PDS relapse.

LIMITATIONS

Risk of misclassification and lack of detailed surgical information.

CONCLUSION

The follow-up of patients with AFX can be limited to clinical visits for 4 years. Patients with PDS should be followed with clinical visits and PET/CT twice a year for the first 3 years and once a year for a minimum of 1 year.

[Primary cutaneous sarcomas]

Primary cutaneous sarcomas are a heterogenous group of malignant soft tissue tumours arising in the dermal and subcutaneous layers of the skin. These tumours are rare and have a variety of clinical manifestations. They differ from deep soft tissue sarcomas in terms of prognosis, which for most types of cutaneous sarcomas is favourable. The tumours are primarily managed by complete surgical excision with margin control. The purpose of this review is to present some of these rare tumors and describe their management.

Reliable test of clinicians' mastery in skin cancer diagnostics

Differentiating between benign and malignant skin lesions can be very difficult and should only be done by sufficiently trained and skilled clinicians. To our knowledge there are no validated tests for reliable assessments of clinicians' ability to perform skin cancer diagnostics. To develop and gather validity evidence for a test in skin cancer diagnostics, a multiple-choice questionnaire (MCQ) was developed based on informal interviews with seven content experts from five skin cancer centers in Denmark. Validity evidence for the test was gathered from May until July 2019 using Messick's validity framework (content, response process, internal structure, relationship to other variables and consequences). Item content was revised through a Delphi-like review process and then piloted on 36 medical students and 136 doctors using a standardized response process. Results enabled an analysis of the internal structure and relationship to other variables of the test. Finally, the contrasting groups method was used to investigate the test's consequences (pass-fail standard). The initial 90-item MCQ was reduced to 40 items during the Delphi-like review process. Item analysis revealed that 25 of the 40 selected items were level I-III quality items with a high internal consistency (Cronbach's α = 0.83) and highly significant (P ≤ 0.0001) differences in test scores between participants with different occupations or levels of experience. A pass-fail standard of 12 (48%) correct answers was established using the contrasting groups' method. The skin cancer diagnostics MCQ developed in this study can be used for reliable assessments of clinicians' competencies.

[Dercum's disease]

Dercum's disease is a rare disease, which mainly affects women and has an unknown prevalence and aetiology. The disease is characterised by generalised obesity and more than three-month painful subcutaneous adipose tissue not responding to usual pain treatment. A suggested classi-fication of the disease includes four types: generalised diffuse, generalised nodular, localised nodular and juxta-articular. Diagnosis is one of exclusion, and treatment includes medical and surgical options with the aim of pain palliation and increased mobility and function.

Self-reported problems and wishes for plastic surgery after bariatric surgery

In the affluent part of the world, there is an increasing occurrence of obesity with Body Mass Index (BMI) above 40, which has resulted in an increasing number of operations such as gastric bypass (GB). After massive weight loss there will often be a need for subsequent plastic surgical correction, since some of the patients will experience problems due to excess skin. Foreign studies estimate that ∼30% of all bariatric surgery patients will at some point seek plastic surgical correction of excess skin. The aim of this study is to investigate to what extent the GB patients themselves consider plastic surgery for removal of excess skin, and their reasons and motivations for this. The investigation was performed as an anonymous questionnaire handed out to 150 patients at the 1-year standard consultation for GB patients at a private hospital. The questionnaire contained information about demographic data, patient habits, earlier or present comorbidity, physical problems, psychological problems, and cosmetic problems due to excess skin. Also, it contained information about what anatomical area bothered the patient the most. One hundred and thirty-eight patients responded to the questionnaire, and the investigation showed that 89.9% of the patients had a wish for plastic surgery for several different reasons. This patient demand showed to have no correlation to age, gender, smoking habits, or earlier comorbidity.

Computed tomography scanning and recurrence after laparoscopic ventral hernia repair

Laparoscopic ventral hernia repair is an advancing surgical method. It seems to have fewer recurrences than open surgery. However, with patients suspected of recurrence after laparoscopic hernia repair, it can be very difficult to determine whether or not there is recurrence by clinical examination alone. The purpose of this article is to show that computed tomography is a valuable diagnostic tool in excluding recurrence after laparoscopic ventral hernia repair. A total of 35 patients were included in a prospective study. They underwent laparoscopic ventral hernia repair, and all patients suspected of recurrence were computed tomography scanned. Four patients were suspected of recurrence. They all presented symptoms of swelling or pain or both. The computed tomography scanning did not show the presence of recurrence in any of the 4 cases. Computed tomography scanning can provide exact information about the content of swelling and whether there is recurrence or not. We conclude that computed tomography scanning is suitable as a valid imaging method in doubtful cases considering ventral hernia recurrence after laparoscopic ventral hernia repair.