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1.
Acta Derm Venereol ; 103: adv4859, 2023 Mar 30.
Article in English | MEDLINE | ID: mdl-36994776

ABSTRACT

Ex-vivo confocal laser scanning microscopy provides a rapid alternative to routine histological processing using haematoxylin and eosin-stained sections. Previous studies suggest high diagnostic accuracy in basal cell carcinoma. This study investigates the diagnostic accuracy of confocal laser scanning microscopy reporting of basal cell carcinoma in a real-life setting and compares reporting by dermatopathologists inexperienced in use of confocal laser scanning microscopy with reporting by an expert in confocal laser scanning microscopy. A total of 334 confocal laser scanning microscopy scans were diagnosed by 2 dermatopathologists inexperienced in the diagnosis of confocal laser scanning microscopy as well as an experienced examiner of confocal laser scanning microscopy scans. The inexperienced examiners achieved a sensitivity of 59.5/71.1% and specificity of 94.8/89.8%. The experienced examiner achieved a sensitivity of 78.5% and specificity of 84.8%. Detection of tumour remnants in margin controls showed insufficient values among inexperienced (30.1/33.3%) and experienced (41.7%) investigators. The results of this study, of real-life setting basal cell carcinoma reporting with confocal laser scanning microscopy, found a lower diagnostic accuracy than published data regarding artificial settings. A poor accuracy in tumour margin control is clinically relevant and could restrict the use of confocal laser scanning microscopy in clinical routine. Prior knowledge of haematoxylin and eosin trained pathologists can be partially transferred to the reporting of confocal laser scanning microscopy scans; however, specific training is recommended.


Subject(s)
Carcinoma, Basal Cell , Skin Neoplasms , Humans , Skin Neoplasms/diagnostic imaging , Skin Neoplasms/pathology , Eosine Yellowish-(YS) , Carcinoma, Basal Cell/diagnostic imaging , Carcinoma, Basal Cell/pathology , Microscopy, Confocal/methods
2.
Diagnostics (Basel) ; 12(12)2022 Dec 02.
Article in English | MEDLINE | ID: mdl-36553036

ABSTRACT

BACKGROUND: Digitally stained ex vivo confocal laser scanning microscopy (CLSM) scans are a possible alternative to formalin-fixed and paraffin-embedded (FFPE) and hematoxylin-eosin (H&E) stained slides. This study explores the diagnostic accuracy of digitally-stained CLSM scans in comparison to H&E-stained slides in various dermatologic diseases in a real-life setting. METHODS: Samples of patients out of one selected dermatologic office were primarily scanned via CLSM; a diagnosis was made afterwards using FFPE- and H&E-stained slides by two experienced dermatopathologists. Primary outcomes were sensitivity and specificity of diagnosis in digitally stained CLSM scans in three separate diagnostic groups. RESULTS: CLSM evaluation of epithelial tumors (n = 132) demonstrated a sensitivity of 64.3%/83.9% and a specificity of 84.2%/71.1%. Diagnosis of melanocytic tumors (n = 86) showed a sensitivity of 19.1%/85.1% and a specificity of 96.3%/66.7%. In the diagnosis of other tumors/cysts and inflammatory dermatoses (n = 42), a sensitivity of 96.4%/96.8% and a specificity of 57.1%/45.5% was reached. CONCLUSIONS: This study shows the possibilities and limitations of a broad use of CLSM. Because of a partly low diagnostic accuracy, such an application does not seem to be recommendable at present for every indication.

3.
Brain Sci ; 11(10)2021 Oct 15.
Article in English | MEDLINE | ID: mdl-34679419

ABSTRACT

BACKGROUND: Interoceptive accuracy and sensibility are decreased in depressive samples. However, different studies showed that cognitive-behavioural therapy (CBT) and mindfulness interventions are promising approaches to improve interoceptive abilities. Based on these findings, the study aims to investigate the pre-post effect of CBT in a depressive sample. Additionally, we examined the effect of mindfulness-based stress reduction (MBSR) training in the context of CBT. METHODS: Sixty depressive patients were investigated over four weeks, with two conditions-CBT vs. CBT + MBSR. Further, the changes in interoceptive abilities (interoceptive accuracy and sensibility) of the depressive patients were compared to baseline data of healthy controls. RESULTS: The depressive patients showed significantly higher levels of depression and lower mindfulness and interoceptive abilities than healthy controls. The depressive sample showed a significant decrease in depressive symptoms and increased mindfulness and interoceptive abilities after CBT. Lastly, depressive patients of the CBT + MBSR condition did not differ from those who only received CBT in the levels of depression, mindfulness or interoceptive abilities over the time course. DISCUSSION: This study demonstrates a positive effect of CBT on interoceptive abilities in a depressive sample. It is shown that the depressive sample did not profit from additional mindfulness training. It can be concluded that CBT is an efficient treatment, resulting in increased interoceptive abilities. Unexpectedly, the combination of CBT and MBSR has no additional effect on these changes. Future studies should investigate the effect of MBSR as a stand-alone therapy.

6.
J Dtsch Dermatol Ges ; 13(9): 942-51, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26882393

ABSTRACT

When using procedures that enable complete examination of surgical margins (3D histology), microscopically controlled surgery (MCS) represents a safe and proven method to confirm R0 resection of infiltrating tumors, especially at problematic sites, while preserving the adjacent tissue. This allows for excellent or good aesthetic results that are superior (cryosurgery, short-range irradiation) or equivalent (PDT) to nonsurgical and less safe procedures (PDT).


Subject(s)
Dermatologic Surgical Procedures/standards , Microsurgery/standards , Neoplasms/pathology , Neoplasms/surgery , Practice Guidelines as Topic , Surgery, Computer-Assisted/standards , Dermatology/standards , Germany , Humans
7.
Reprod Biol Endocrinol ; 12: 23, 2014 Mar 18.
Article in English | MEDLINE | ID: mdl-24641817

ABSTRACT

BACKGROUND: Acne is a very common skin condition during adolescence and adulthood. Patients with uterovaginal agenesis (Mayer-Rokitansky-Küster-Hauser syndrome, MRKH) treated at the Tübingen University Center for Rare Female Genital Malformations, however, clinically appeared to be less frequently affected by acne. The etiology of MRKH syndrome remains unknown. The only known MRKH-associated mutations are located within the WNT4 gene and lead to an atypical form of MRKH syndrome associated with clinical and biochemical hyperandrogenism. Our study aimed to assess the frequency, severity, and self-evaluation of acne in MRKH patients and to correlate the clinical findings with hormone analyses. METHODS: As part of a cross-sectional longterm follow-up study after laparoscopic assisted creation of a neovagina a questionnaire was sent to 149 MRKH patients aged 16-44 years comprising 26 items concerning prevalence and self-evaluation of acne, and the effects of acne on quality of life. The questionnaire was derived from one used in a former epidemiological study of acne in 4,000 women. Blood for hormone analyses was collected routinely during the clinical visit. RESULTS: Fully completed, evaluable questionnaires were returned by 69/149 (46%) women. Of these respondents, 42 (60.1%) showed hyperandrogenemia without other clinical signs of virilization but only 17 (24.6%) reported acne (8 (11.6%) had physiological acne and 9 (13.0%) clinical acne) and only 10 (14.5%) reported receiving medical treatment for their acne. Effects of acne on quality of life were minor. Only 4 patients (5.8%) with PCOS were identified, among them one with physiological acne, the other three within the acne-free group. CONCLUSIONS: Although hyperandrogenemia is common, acne is significantly less frequent in women with MRKH than reported in the literature for non-MRKH women, and is seldom treated medically. Patients in this study appeared resistant to acne to some extent, possibly due to the sebaceous glands in the acne regions being less sensitive to androgens compared to the normal population. A WNT4 mutation is unlikely to be the main cause of MRKH syndrome in our hyperandrogenemic patients.


Subject(s)
46, XX Disorders of Sex Development/epidemiology , Acne Vulgaris/epidemiology , Congenital Abnormalities/epidemiology , Hyperandrogenism/epidemiology , Mullerian Ducts/abnormalities , Polycystic Ovary Syndrome/epidemiology , 46, XX Disorders of Sex Development/diagnosis , Acne Vulgaris/diagnosis , Adolescent , Adult , Congenital Abnormalities/diagnosis , Cross-Sectional Studies , Female , Follow-Up Studies , Humans , Hyperandrogenism/diagnosis , Incidence , Polycystic Ovary Syndrome/diagnosis , Surveys and Questionnaires , Young Adult
8.
J Dtsch Dermatol Ges ; 11 Suppl 6: 1-116, 1-126, 2013 Aug.
Article in English, German | MEDLINE | ID: mdl-24028775

ABSTRACT

This first German evidence-based guideline for cutaneous melanoma was developed under the auspices of the German Dermatological Society (DDG) and the Dermatologic Cooperative Oncology Group (DeCOG) and funded by the German Guideline Program in Oncology. The recommendations are based on a systematic literature search, and on the consensus of 32 medical societies, working groups and patient representatives. This guideline contains recommendations concerning diagnosis, therapy and follow-up of melanoma. The diagnosis of primary melanoma based on clinical features and dermoscopic criteria. It is confirmed by histopathologic examination after complete excision with a small margin. For the staging of melanoma, the AJCC classification of 2009 is used. The definitive excision margins are 0.5 cm for in situ melanomas, 1 cm for melanomas with up to 2 mm tumor thickness and 2 cm for thicker melanomas, they are reached in a secondary excision. From 1 mm tumor thickness, sentinel lymph node biopsy is recommended. For stages II and III, adjuvant therapy with interferon-alpha should be considered after careful analysis of the benefits and possible risks. In the stage of locoregional metastasis surgical treatment with complete lymphadenectomy is the treatment of choice. In the presence of distant metastasis mutational screening should be performed for BRAF mutation, and eventually for CKIT and NRAS mutations. In the presence of mutations in case of inoperable metastases targeted therapies should be applied. Furthermore, in addition to standard chemotherapies, new immunotherapies such as the CTLA-4 antibody ipilimumab are available. Regular follow-up examinations are recommended for a period of 10 years, with an intensified schedule for the first three years.


Subject(s)
Dermatology/standards , Dermoscopy/standards , Melanoma/diagnosis , Melanoma/therapy , Skin Neoplasms/diagnosis , Skin Neoplasms/therapy , Drug Therapy/standards , Humans , Immunotherapy/standards , Lymphatic Metastasis , Medical Oncology/standards , Melanoma/secondary , Practice Guidelines as Topic
13.
J Dtsch Dermatol Ges ; 8(11): 920-5, 2010 Nov.
Article in English, German | MEDLINE | ID: mdl-20337775

ABSTRACT

To confirm a local R0 resection of tumors with infiltrative growth at problem sites and for sparing of tissue, microscopically controlled surgery represents a safe and proven method, particularly when there are no gaps between the tissue taken at the incision margins.


Subject(s)
Microscopy/standards , Mohs Surgery/standards , Robotics/standards , Skin Diseases/pathology , Skin Diseases/surgery , Surgery, Computer-Assisted/standards , Feedback , Humans
14.
J Dtsch Dermatol Ges ; 8(6): 400-10, 2010 Jun.
Article in English, German | MEDLINE | ID: mdl-20141551

ABSTRACT

In recent years, in vivo confocal laser scanning microscopy (CLSM) has become an established method for the non-invasive examination of the skin. In vivo CLSM allows for real-time imaging of micro-anatomic cutaneous structures. It has been used to diagnose ambiguous skin tumors and to measure subclinical tumor spread prior to surgery. By additionally providing high power morphologic information, in vivo CLSM helps to reduce unnecessary biopsies. A multitude of diagnostic features for skin tumors has been published. Here we review published diagnostic in vivo CLSM features, and compare them to our own experience in 100 tumors. In combination with clinical examination and dermatoscopy, in vivo CLSM is a valuable additional tool for non-invasive skin tumor diagnosis.


Subject(s)
Dermoscopy/methods , Image Enhancement/methods , Microscopy, Confocal/methods , Skin Neoplasms/pathology , Skin/pathology , Humans
16.
J Dtsch Dermatol Ges ; 7(10): 871-6, 2009 Oct.
Article in English, German | MEDLINE | ID: mdl-19298546

ABSTRACT

BACKGROUND: Accurate pre-operative or intra-operative labeling of the skin is often necessary to mark exactly the surgical excision lines. Pre-operative "unsterile" permanent skin labeling systems are needed for example for vein and sentinel lymph node surgery; here the dyes must resist two surgical skin disinfection procedures. In contrast, excision borders are labeled during surgery using a "sterile" skin marking system. METHODS: Many commercial and non-commercial pre- and intra-operative skin labeling systems are available, such as autologous patient blood, fluorescence triphenylmethane dyes and commercial skin markers. The available skin marking systems have specific advantages and disadvantages. We review the different labeling systems, offering guidelines to help choose a cost-effective system appropriate for a given surgical procedure. RESULTS: The Edding permanent markers 400 und 3000 are well suited for preoperative skin labeling and less expensive than commercial skin labeling systems. Autologous patient blood and eosin are well suited for intra-operative labeling and are most cost effective. Eosin Y is widely used and well suited for labeling of dark skin, bone, cartilage, and muscle tissue and spares the expense of expensive commercial skin markers. CONCLUSION: Knowledge of the many commercial and non-commercial pre- and intra-operative skin labeling systems and their advantages and disadvantages helps to reduce the use of relatively expensive commercial skin markers.


Subject(s)
Coloring Agents , Dermatologic Surgical Procedures , Ink , Preoperative Care/methods , Staining and Labeling/methods , Humans
18.
J Am Acad Dermatol ; 57(4): 616-21, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17610993

ABSTRACT

OBJECTIVE: The present study was planned to evaluate the efficacy and tolerability of topical treatment with imiquimod in nodular basal cell carcinoma (nBCC). METHODS: One hundred two patients were randomized to receive thrice-weekly topical imiquimod for either 8 or 12 weeks. Twelve patients dropped out. A total of 90 patients were evaluated for tolerability and efficacy. Histologic clearance was controlled by excising the original tumor location with 3-mm margins and evaluating with permanent sections the cut-surgical margin, including the deep margin, and with serial step-sectioning the central portion of the tissue for tumor persistence. RESULTS: There were no significant differences between the treatment arms with respect to efficacy and tolerability. Of 90 evaluable patients, 70 had a complete clinical clearance (78%). Clinically visible tumor was still present in 20 patients (22%). A complete histopathological clearance was observed in 58 patients (64%). Tumor persisted in 32 patients (36%). In 12 patients, despite complete clinical clearance, tumor remnants were still detected in histopathological evaluation. Efficacy was better in nBCC that was less than 1 cm in diameter, showing 82% clinical and 72% histopathologic clearing. Adverse events were reported in 92% of the patients and were mainly classified as minor or moderate local inflammation. LIMITATIONS: Clinical follow-up was limited to the time period between end of treatment and final complete excision. CONCLUSION: Imiquimod applied thrice weekly for 8 and 12 weeks shows modest activity against small nBCC. Residual tumor was present in more than one third of treated patients. Clinical appearance after treatment does not accurately reflect the presence or absence of disease in nearly 1 of every 5 patients with nBCC. Since 17% of patients with clinical clearance still have pathologic evidence of disease, excisional biopsy of the treated site is still indicated.


Subject(s)
Aminoquinolines/administration & dosage , Antineoplastic Agents/administration & dosage , Carcinoma, Basal Cell/drug therapy , Skin Neoplasms/drug therapy , Administration, Topical , Adult , Aged , Aged, 80 and over , Carcinoma, Basal Cell/pathology , Drug Administration Schedule , Emollients , Female , Humans , Imiquimod , Male , Middle Aged , Neoplasm, Residual , Skin Neoplasms/pathology , Treatment Outcome
20.
J Vasc Res ; 42(1): 38-46, 2005.
Article in English | MEDLINE | ID: mdl-15637439

ABSTRACT

Laser Doppler flowmetry (LDF) is frequently used to study the microcirculation. Usually LDF time series are analyzed by conventional linear methods, mainly Fourier analysis. The aim of this study was to observe dynamic blood perfusion of the skin in malignant and benign melanocytic skin lesions. Wavelet transformation was performed on each LDF time series in order to calculate a vasomotion field. First, the differences in vasomotion between healthy and pigmented skin were evaluated visually on six different time scales of the vasomotion field. In order to quantify the findings, vasomotion scale variance (VSV) was calculated for each scale plane of the vasomotion field. These VSV were compared using contrast DeltaVSV to determine the difference between healthy skin and a pigmented skin lesion in the same patient. After the measurements, the skin lesions were excised and examined histologically. We found that wavelet analysis of LDF time series is a specific, sensitive method for the in vivo identification of malignant melanoma. It is a non-invasive procedure and takes minimal time to be carried out.


Subject(s)
Melanoma/physiopathology , Skin Neoplasms/physiopathology , Skin/blood supply , Humans , Laser-Doppler Flowmetry , Regional Blood Flow
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