[Comparison of Two Umbilicoplasty Techniques in 72 Patients after Breast Reconstruction with a Free DIEP Flap] / Vergleich zweier Techniken der Umbilikoplastik bei 72 Patientinnen nach Brustrekonstruktion mit freier DIEP-Lappenplastik.

INTRODUCTION: The appearance of the umbilicus after DIEP flap surgery or abdominoplasty plays an important role in aesthetic perception (1). Although the umbilicus has no function, there is no doubt about the importance of its shape for the self-esteem of patients, especially after breast cancer (2). In the present study, we compared two of the preferred techniques described in the literature on 72 patients in terms of aesthetic outcome, complications and sensitivity: the caudal flap (domed shape) and the oval shape of the umbilicus. PATIENTS AND METHODS: Seventy-two patients who underwent a DIEP flap for breast reconstruction between January 2016 and July 2018 were retrospectively included in this study. Two techniques for umbilical reconstruction were compared: the transverse oval shape of the umbilicus and umbilicoplasty using a caudal flap, which results in a dome shape of the umbilicus. To compare the aesthetic results, an evaluation by the patients and an assessment by three independent plastic surgeons were carried out at least 6 months postoperatively. Patients and surgeons were asked to rate the general appearance of the umbilicus, including scarring and shape, on a scale from 1 to 6 (1=very good, 2=good, 3=fair, 4=sufficient, 5=poor, 6=insufficient). Furthermore, the occurrence of wound healing disorders was examined, and patients were asked about the sensitivity of the umbilicus. RESULTS: Both techniques showed similar degrees of aesthetic satisfaction (p=0,49) as part of the patients' self-assessment. The plastic surgeons gave the caudal flap technique a significantly better rating than the umbilicus with a transverse oval shape (p=0,042). More wound healing disorders occurred in the caudal lobule (11,1%) compared with the transverse oval umbilicus. However, this was not significant (p=0,16). A surgical revision was not necessary. The caudal flap umbilicus showed a tendency to improved sensitivity (60 vs. 45%), but this was not significant (p=0,19). CONCLUSION: Patient satisfaction showed similar results for the two methods of umbilicoplasty. On average, both techniques were given a good rating for their results. However, surgeons rated the caudal flap umbilicoplasty as more aesthetically pleasing.

Sichere Diagnostik der Implantatrotation im hochauflösenden Ultraschall in Abhängigkeit vom Implantathersteller.

Rotation of an anatomical breast implant may require revisional surgery. High-resolution ultrasound can help determine the exact implant alignment. However, the directional markings of anatomical implants are implemented very inconsistently by manufacturers. Therefore, a definite diagnosis is often not possible without precise knowledge of the expected imaging. The aim of this work is a differentiation of the imaging of common implant brands in high-resolution ultrasound. Methods To simulate an authentic imaging, anatomical implants were viewed through abdominal skin thinned to 1.5-2 cm, which was obtained during a classic abdominoplasty. Implants from the companies Allergan, Eurosilicone, Mentor, Motiva, Nagor, Polytech and Sebbin were compared. The marking positions and dimensions were documented by ultrasound. Results Based on placement and shape, a clear allocation between alignment and manufacturer is basically possible among the implants used. The base plate and caudal markers could be clearly visualised for all brands. In Polytech implants, however, the visible structural change is limited to a very small central area. The visualisation of directional marks, base plate and implant shell also allow conclusions to be drawn about the manufacturer. In high-resolution ultrasound, a fast and reliable diagnosis of implant alignment is possible for all implants examined. Also it was possible to make a clear allocation between implant and manufacturer in this context. Flip over of the implant can also be reliably depicted. The cataloguing of the markings summarised here can be used to determine the exact alignment of the implant and thus provide diagnostic certainty, especially if the brand is unknown.

Topische Applikation von Tranexamsäure im Rahmen der subkutanen Mastektomie bei Frau-zu-Mann Transidentität.

INTRODUCTION: Tranexamic acid (TXA) is an antifibrinolytic drug that can be used to treat and prevent bleeding. Its application in plastic and reconstructive surgery has been very limited to date. To our knowledge, there is a lack of published data on the topical application of TXA in transgender patients undergoing subcutaneous mastectomy. METHODS: We performed a retrospective data analysis of female-to-male transgender patients who underwent subcutaneous mastectomy. A total of 22 patients were treated with topical TXA, while 29 patients served as controls. The primary endpoint was the amount of wound secretion in the first 48 hours after surgery. Secondary endpoints were the duration of drainage and the occurrence of postoperative bleeding. RESULTS: Within the first 48 hours, the TXA group had an average drain volume of 97±50 ml compared with 180±111 ml in the control group (p<0.01). There was a significantly lower flow rate over the entire period in the group of TXA patients (113±86 ml vs. 265±197 ml). The time of drains in situ was 2.3±0.7 days in TXA patients, while the drains in the control group were in place for an average of 3.4±1.3 days (p<0.01). In the group of patients treated with TXA, there was a tendency towards a lower number of postoperative bleeding and haematoma (9vs. 17%). DISCUSSION: There was a significant reduction in the amount of drain fluid within the first 48 hours and over the entire period after topical application of TXA. Also there was a reduction in the length of time patients had a drain in place in the TXA-treated patients. This study demonstrated a significant advantage for the topical application of TXA in subcutaneous mastectomy in female-to-male transgender patients.

[Treatment of phyllodes tumours of the breast: evaluation of 66 cases and literature review]. / Zur Therapie von Phylloides-Tumoren der Brust ­ eine Aufarbeitung von 66†Fällen mit Literaturübersicht.

Phyllodes tumours (PTs) of the breast are classified as benign, borderline and malignant based on the constellation of defined histological parameters. Surgical excision is the primary therapy, but the need to maintain certain safety margins is still controversially discussed for all three categories.This paper aims to provide a critical opinion on the existing recommendation on safety margins for resection.In our breast centre, all patients with phyllodes tumours were identified retrospectively on the basis of the histopathological documentation from 1999 to 2018. The cases were evaluated, in particular, with a view to recurrences and the occurrence of multicentricity.A total of 66 patients were diagnosed with a PT. In 38 cases, the tumours were benign, in 15 borderline and in 13 malignant. Local recurrences were observed in one benign PT, 7 borderline and 5 malignant PTs. Two PTs that were initially classified as borderline tumours progressed to malignant PTs. Multicentricity occurred in about 20 % of borderline and malignant PTs but only in 5 % of benign PTs.The resection margins for phyllodes tumours should be chosen depending on dignity and recurrence. The key question to be challenged is whether or not there is a need to maintain a certain safety margin in benign PTs. In case of recurrence of borderline or malignant PTs, a mastectomy should be considered early.

[Long-term results after reconstruction of the nipple-areola complex]. / Langzeitergebnisse nach Rekonstruktion des Mamillen-Areola-Komplexes.

The reconstruction of the nipple-areola complex (NAC) is an aesthetically and psychosocial important final step in breast reconstruction. While numerous publications examine the long-term results using various techniques to reconstruct the nipple, to our knowledge there have been few studies on the long-term results after areolar reconstruction. The study therefore examines the long-term results after areola reconstruction in women with autologous breast reconstruction. In the period 2014-2016 we performed NAC reconstructions in 126 patients in our clinic. The areola was reconstructed by full skin transplantation from the groin or upper eyelids. A total of 27 women with a median age of 52 ± 8.6 years after a median period of 1.7 ± 0.7 years were examined with regard to colour change, size change and satisfaction with the reconstruction result of the MAK. The results showed a noticeable colour fading with good satisfaction of the patients with the result. We observed an increase in the size of the neoareoles by an average of 13,9 percent with full skin from the groin and 34,6 percent with full skin from the upper eyelids. Patients should be informed preoperatively of colour fading and size changes of the neo-areola.

[How well are patients informed on the websites of German university breast centres about the possibilities of breast reconstruction?] / Wie gut werden Patientinnen auf Internetseiten von deutschen universitären Brustzentren über die Möglichkeiten der Brustrekonstruktion informiert?

INTRODUCTION: In recent decades, the internet has become one of the most important sources of information for patients. How substantial are the possibilities to find out about breast reconstruction on the homepages of university hospitals in Germany? Is there information about plastic surgery with its spectrum of modern reconstructive possibilities? METHODS: A total of 35 homepages of university breast centres in Germany was analysed for the indication of cooperation with a plastic surgeon or a department for plastic surgery and their links, with information on reconstructive possibilities such as implant reconstruction, autologous soft tissue reconstruction with pedicled and free flaps as well as lipofilling. RESULTS: A plastic surgeon or a cooperating department is mentioned on 49 % of the homepages. Of those homepages, 20 % contain a direct link. 91 % of the homepages describe the possibility of breast reconstruction in general, 80 % of the websites the use of autologous tissue. In 51 % of the cases, a free tissue transfer is mentioned, whereas only 23 % describe the procedures like DIEP flap, TMG, or I-GAP in more detail. Only two centres use detailed illustrations. Six websites (17 %) describe reconstruction by pedicled TRAM flap only. Breast reconstruction with a silicone implant is mentioned on 71 % of the websites. The possibility of lipofilling is discussed in 31 %. DISCUSSION: About half of the websites of university breast centres do not show any cooperation with a plastic surgeon. There are significant gaps in the information on free tissue transfer for breast reconstruction.

[Adequate Antibiotic Prophylaxis and Therapy of Periprosthetic Infections of the Breast - Review of 468 Consecutive Implant Removals]. / Gezielte Antibiotika-Prophylaxe und Therapie periprothetischer Infektionen der Brust ­ Erfahrungen aus 468 konsekutiven Implantatentfernungen.

Background Periprosthetic infections are feared complications in aesthetic as well as in reconstructive breast surgery. The purpose of our study was to evaluate our institution's specific culture data and to identify most common organisms and suitable antibiotics for prophylaxis and first line treatment in implant-based breast surgery. Patients and Methods We analyzed all patients with a change or removal of breast implants in the period from 01.01.2012 to 31.12.2015 retrospectively. Based on the medical records, the surgical indications were identified and specifically analyzed for signs of infection and capsular fibrosis. In addition, we assessed all microbiological data of these interventions. Results 468 implant removals or exchanges were performed in 360 patients. Microbiological smears were gathered from 169 patients (249 implants). Bacteria were cultured from 23 implants (21 patients). In 6 additional implants (four patients) a periprosthetic infection was present, without pathogen detection. In most cases, advanced capsular fibrosis was the reason for implant exchange. In 17 smears bacterial detection was carried out despite absence of clinical signs of infection. In 17 cases coagulase-negative staphylococci were detected. In 4 Staphylococcus aureus, and once each E. coli, Morganella morganii and Proprionibacterium acnes (one double infection). All pathogens were sensitive to piperacillin/tazobactam and vancomycin. One resistancy was seen to cefuroxime and amoxicillin/clavulanic acid, and 2 to gentamicin, ciprofloxacin and clindamycin. Conclusion In the majority of cases, pathogen detection was an incidental finding, while capsular contracture caused surgical revision. Pathogens and resistance patterns found in this study differed from the majority of international publications. In our institution, Cefuroxime and amoxicillin/clavulanic acid have been proven to be a reasonable choice for prevention and treatment of periprosthetic infections. Especially in fulminant infections piperacillin/tazobactam would be our choice for initial treatment, until the specific antibiogram is available.

Local shockwave-induced capillary recruitment improves survival of musculocutaneous flaps.

BACKGROUND: Shockwave (SW) application has been shown to limit flap necrosis. However, the underlying microhemodynamic mechanisms remain unclear. Therefore, the objective of this study was to analyze the effect of SW application on a microcirculatory level. METHODS: We treated 12 C57BL/6 mice with local SW application (500 shockwave impulses at 0.15 mJ/mm(2)) either 24 h before (preconditioning [PRE]) or 30 min after (postconditioning [POST]) flap elevation. Animals with an untreated flap (CON) or without a flap served as controls. We applied dorsal skinfold chambers to the animals and performed epifluorescence microscopy over a 10-d period to assess microcirculatory parameters (arteriolar diameter, red blood cell velocity, blood flow, functional capillary density, and intercapillary distance) as well as inflammation, apoptotic cell death, and necrosis. RESULTS: SW application significantly decreased tissue necrosis independently of the application time point (PRE: 29% ± 7%; POST: 25% ± 7% versus CON: 47% ± 2%; day 10, P < 0.05). Arteriolar diameter, red blood cell velocity, and blood flow were not statistically significantly different among the 3 flap groups. However, SW (PRE and POST) resulted in an early and persistent increase in functional capillary density and consequently decreased intercapillary distance compared with CON and the group without a flap (P < 0.05). Also, SW resulted in a significantly decreased inflammatory response (P < 0.05) and induced an angiogenic response, as indicated by new functional microvessel formation observed 5 d after therapy. CONCLUSIONS: Local SW application improved tissue survival by recruitment of sleeping capillaries within the non ischemic tissue and maintenance of capillary perfusion within the critically perfused tissue after induction of ischemia, which was independent of the application time point. Neoangiogenesis occurred beyond the ischemic tolerance of the tissue, and therefore does not seem to contribute to improved tissue survival.

Partially irreversible paresis of the deep peroneal nerve caused by osteocartilaginous exostosis of the fibula without affecting the tibialis anterior muscle.

Dysfunction of the lower limb's muscles can cause severe impairment and immobilisation of the patient. As one of the leg's major motor and sensory nerves, the deep peroneal nerve (synonym: deep fibular nerve) plays a very important role in muscle innervation in the lower extremities. We report the case of a 19-year-old female patient, who suffered from a brace-like exostosis 6-cm underneath her left fibular head causing a partially irreversible paresis of her deep peroneal nerve. This nerve damage resulted in complete atrophy of her extensor digitorum longus and extensor hallucis longus muscle, and in painful sensory disturbance at her left shin and first web space. The tibialis anterior muscle stayed intact because its motor branch left the deep peroneal nerve proximal to the nerve lesion. Diagnosis was first verified 6 years after the onset of symptoms by a magnetic resonance imaging (MRI) scan of her complete left lower leg. Subsequently, the patient was operated on in our clinic, where a neurolysis was performed and the 4-cm-long osteocartilaginous exostosis was removed. Paralysis was already irreversible but sensibility returned completely after neurolysis. The presented case shows that an osteocartilaginous exostosis can be the cause for partial deep peroneal nerve paresis. If this disorder is diagnosed at an early stage, nerve damage is reversible. Typical for an exostosis is its first appearance during the juvenile growth phase.

Third-degree burn leading to partial foot amputation--why a notebook is no laptop.

So far a few case reports about laptops causing burns have been published. Now for the first time, we report on a case, in which notebook-induced thermal injuries placed in a patient's lap resulted in severe second- and third-degree burns. As a consequence, a partial amputation of the left foot had to be performed. Furthermore, we measured maximum temperatures of 12 popular laptops, which were running full load for 3 h. For this experiment air circulation underneath the device was blocked in order to simulate surrounding conditions, which were present when the patient got injured. Although this setting may be the reason for most of all notebook burns, this kind of test has not been part of any scientific publication until now. Patients with lower extremity sensation, altered consciousness or decreased peripheral sensitivity have a higher risk for thermal injuries.

Use of gene-modified keratinocytes and fibroblasts to enhance regeneration in a full skin defect.

BACKGROUND: With the development of cell-based gene transfer techniques, genetically modified human keratinocytes (Kc) and fibroblasts (Fb) have been proven to be a better choice in wound repair. METHODS: This study was designed to construct in one step a gene-modified artificial skin by a genetically engineered Kc expressing PDGF-BB and Fb expressing VEGF(165) and bFGF. The wound healing effect in a full-thickness wound model was then observed. Unmodified artificial skin served as control. On the post-operative days 7, 14, and 21, residual wound area was calculated and skin wound tissues were subjected to biopsy for further investigation. RESULTS: Compared with unmodified artificial skin, gene-modified artificial skin resulted in a reduced wound contraction and a well-organized human epidermis and better formed dermis. CONCLUSIONS: The results suggest that our two-layer, gene-modified artificial skin improved both vascularization and epidermalization for skin regeneration. This technique could bring about a new approach in the treatment of burns and chronic wounds.

Ex vivo method to visualize and quantify vascular networks in native and tissue engineered skin.

BACKGROUND AND AIMS: Neovascularization plays a pivotal role in tissue engineering and tissue regeneration. However, reliable technologies to visualize and quantify blood vessel networks in target tissue areas are still pending. In this work, we introduce a new method which allows comparing vascularization levels in normal and tissue-engineered skin. MATERIALS AND METHODS: Normal skin was isolated, and vascular dermal regeneration was analyzed based on tissue transillumination and computerized digital segmentation. For tissue-engineered skin, a bilateral full skin defect was created in a nude mouse model and then covered with a commercially available scaffold for dermal regeneration. After 3 weeks, the whole skin (including scaffold for dermal regeneration) was harvested, and vascularization levels were analyzed. RESULTS: The blood vessel network in the skin was better visualized by transillumination than by radio-angiographic studies, the gold standard for angiographies. After visualization, the whole vascular network was digitally segmented showing an excellent overlapping with the original pictures. Quantification over the digitally segmented picture was performed, and an index of vascularization area (VAI) and length (VLI) of the vessel network was obtained in target tissues. VAI/VLI ratio was calculated to obtain the vessel size index. CONCLUSIONS: We present a new technique which has several advantages compared to others, as animals do not require intravascular perfusions, total areas of interest can be quantitatively analyzed at once, and the same target tissue can be processed for further experimental analysis.

Combined manifestation of a neurofibroma and a nerve sheath ganglion in the ulnar nerve after radiotherapy in early childhood.

Occurrence of clinically symptomatic benign neurofibromas of peripheral nerves after radiotherapy is a rarity. We saw a 55-year-old female who developed progressive failure of the ulnar nerve 55 years after 20Gy (226)Ra brachytherapy of a haemangioma of the left elbow at the age of 3 months. Nerve compression at the sulcus segment was caused by the intraneural growth of a neurofibroma and the formation of a nerve sheath ganglion. The rapidly progressive symptoms required operative treatment. Due to the infiltrating tumour growth we decided to resect this segment of the ulnar nerve and reconstruct it with an interfascicular nerve graft. This case demonstrates a rare possible consequence of radiotherapy in which the co-existence of two benign lesions required surgical intervention. Radiotherapy-induced malignant tumours and tissue scarring are well known as complications. The present case suggests further possible late effects of radiotherapy to consider.