Search Results (51)

Lymphedema is a chronic condition marked by swelling in the body’s soft tissues due to impaired or damaged lymphatic function. Lymphedema is estimated to affect about 1 in 1000 in the United States and 1.4 per 1000 based on two European studies. Lymphedema diagnosis relies on clinical visual assessment by physicians, and the quantitative evaluation of lymphatic function is not widely employed due to the lack of standardized and validated metrics. Lymphoscintigraphy is considered the practical gold standard for evaluating lymphedema. With the emergence of advanced surgical therapies, there is a growing demand for quantitative evaluation metrics to objectively evaluate treatment response. To address this unmet need, we reviewed various methods of quantitative lymphoscintigraphy (qLSG) that were used for assessing lymphedema. We found that multiple qLSG approaches have been described. Moreover, the protocols vary widely in terms of tracer type, injection route, dosage, and exercise interventions. We compared the quantitative assessment strategies and highlighted the approaches that may help provide a more objective lymphedema diagnosis and follow-up. Full article

Background: Lymphedema is a debilitating condition with high morbidity, yet despite advances in management, diagnostic ambiguity and fragmented referral patterns continue to delay appropriate care. We evaluated predictors of accurate diagnosis, microsurgical reconstruction candidacy, and secondary referrals generated during consultation with a lymphatic microsurgeon to highlight the need for a coordinated model of care. Methods: A retrospective chart review was performed for all outpatient referrals for ‘lymphedema’ from September 2020 to September 2021. Patient demographics, diagnostics, referral patterns, and lymphedema-related clinical data were collected. Results: 94 patients were referred for evaluation of possible lymphedema; lymphoscintigraphy confirmed diagnosis in 69. Following consultation, 23 patients received referrals for physical therapy, 17 for vascular surgery, and 8 for bariatric surgery or medical weight loss. Patients without lymphedema were more often referred to vascular surgery than those with lymphedema. Non-surgical candidates were more frequently referred to therapy or weight loss. Conclusions: Incorporating microsurgical reconstructive expertise into the evaluation of limb swelling improves diagnostic accuracy and refers patients- regardless of lymphedema status or surgical candidacy- to appropriate specialists. We propose a pathfinder model for patient flow that streamlines triage, improves access to accurate diagnosis and treatment, and prevents overburdening microsurgical practices with non-surgical patients. Full article

Background: Sentinel lymph node (SLN) biopsy has emerged as a cornerstone in melanoma staging, offering targeted evaluation of regional lymphatic spread and guiding therapeutic decision-making. Traditionally, SLN mapping relies on lymphoscintigraphy using technetium-99m (Tc-99m) radiocolloid, but in recent years, indocyanine green (ICG) fluorescence imaging has emerged as a promising alternative. The aim of this review is to evaluate the diagnostic accuracy of ICG–near-infrared (NIR) imaging compared to standard Tc-99m lymphoscintigraphy in SLN biopsy (SLNB). Methods: A systematic review and meta-analysis were conducted, including 12 studies. The primary outcome was the false-negative rate; secondary outcomes included the total number of sentinel lymph nodes (SLNs) identified by ICG–NIR imaging and Tc-99m lymphoscintigraphy, the number of metastatic SLNs detected by each method, and the number of patients with metastatic disease. The statistical analysis for dichotomous variables was performed using the “Odds Ratio” (O.R.) calculated with the Mantel–Haenszel method. For continuous variables, the analysis utilized the “Mean Difference” calculated by the inverse variance method. All data are presented with a 95% confidence interval (CI). Results: ICG was associated with a significantly higher number of SLNs identified compared to Tc-99m (O.R.: 0.41, 95% CI: 0.34–0.49; p < 0.00001), while no significant differences were found in the detection of metastatic nodes, either as a proportion of total SLNs (O.R.: 1.04, 95% CI: 0.86–1.25; p = 0.68) or relative to total positive nodes (O.R.: 0.36, 95% CI: 0.16–0.81; p = 0.01). No statistically significant differences between the two techniques were found in the detection of metastatic patients (OR: 0.80, 95% CI: 0.31–2.03, p = 0.33) and in the total number of false-negative patients missed (risk difference (RD): 0.03, 95% CI: −0.04 to 0.09, p = 0.93). Conclusions: While ICG identifies a higher number of SLNs compared to Tc-99m, its ability to detect metastatic involvement is comparable between the two modalities. No significant differences were observed in the proportion of metastatic SLNs, the total number of positive nodes detected, the number of metastatic patients identified, and the false-negative rate. Given its favorable profile, ICG could represent a reliable alternative or adjunct to Tc-99 in SLNB. However, prospective studies are warranted to validate its standalone diagnostic role. Full article

Postoperative edema is a nearly universal consequence of aesthetic surgery, yet its clinical implications and potential progression to lymphedema remain underexplored. This review examines the prevalence, pathophysiology, diagnostic criteria, and management strategies for edema and lymphedema following aesthetic procedures. A comprehensive search of PubMed, Embase, and Cochrane databases identified studies involving adult patients undergoing aesthetic surgeries with documented postoperative edema or lymphedema. The review found that while edema is expected postoperatively and is generally self-limiting, persistent or disproportionate swelling may indicate early lymphedema. Risk factors include extensive liposuction, body contouring, and procedures involving lymphatic disruption. Despite its significance, lymphedema remains underdiagnosed due to a lack of standardized diagnostic criteria and low clinical suspicion. Emerging imaging modalities, such as indocyanine green lymphography, enhance early detection, while conservative treatments, such as manual lymphatic drainage, compression, and physical therapy, remain first-line interventions. Increased awareness among surgeons and incorporation of lymphatic-preserving techniques are vital to reducing morbidity. This review underscores the importance of distinguishing transient edema from chronic lymphedema and calls for further research to establish evidence-based guidelines for diagnosis, prevention, and management of postoperative lymphedema in aesthetic surgery. Full article

Accurate lymph node staging is crucial for both prognosis (in the event of early-stage disease) and treatment (for local control of disease) in patients with breast cancer. Sentinel lymph node biopsy (SLNB) has been studied in numerous international trials, showing that it allows about 70% of axillary lymph node dissection (ALND) to be avoided and thus significantly reduces the morbidity associated with ALND. SLNB represents a necessary step in the diagnostic algorithm for breast neoplasms because the surgical treatment for breast cancer has become progressively less invasive. We present a case of a 70-year-old woman with multicentric breast cancer (MBC) treated by surgery at “Cuza Vodă” Women’s University Hospital, Iassy, Romania. In this case, only the ultrasonography established the diagnosis of left MBC with certainty. Conclusion: The detection of sentinel lymph nodes (SLNs) for MBC must be indicated. In this type of cancer, SLNB is accurate and practical, with sufficient quality control and interdisciplinary collaboration between surgical, nuclear medicine, and pathology units. Lymphoscintigraphy allows the patient to avoid axillary clearance surgery if the sentinel node is negative for metastatic disease. The variability of Ki67, PR, HER2, and ER status supports the idea that all individual foci should be tested in MBC cases to provide the best management and prognosis. Full article

This study investigates long-term volume reduction after microsurgical autologous lymphatic vessel transplantation (LVT) in patients with chronic lymphoedema. Lymphoedema is caused by inadequate lymphatic drainage and leads to swelling, pain, and a reduced quality of life. Conservative treatments often show only limited success, which is why surgical procedures such as LVT are increasingly gaining in importance. In a retrospective long-term analysis, patients who underwent LVT between 1988 and 2010 were examined on average 21.7 years after surgery. The examination included pre- and post-operative volume measurements, which were supplemented by modern 3D body scanner analyses and lymphoscintigraphy. The results show a significant volume reduction both in the short term (p < 0.01) and at the follow-up examination (p = 0.04). There was no significant difference between manual volumetry with circumferential measurements and 3D volumetry (p = 0.775). The improvement in lymph transport capacity was considerable (p = 0.078). This study provides valuable insights for the further development of lymphatic surgery. While preferred surgical methods change over time, this study demonstrates that LVT can make a decisive contribution to improving the quality of life of lymphedema patients. Full article

Objectives: To investigate the diagnostic value of various lymphatic imaging techniques for thoracic duct (TD) outlet obstruction in patients with chylous leakage. Methods: A retrospective analysis was conducted on 23 patients with chylous leakage who were radiologically diagnosed with a TD outlet obstruction and underwent a TD exploration and reconstruction between January 2022 and February 2025. Non-enhanced magnetic resonance lymphangiography (MRL), ⁹⁹Tc^m-DX lymphoscintigraphy, and intranodal lymphangiography were employed to detect abnormalities in the central lymphatic vessels. The Receiver Operating Characteristic (ROC) curve was utilized to analyze the diagnostic performance of these imaging methods for TD outlet obstruction in lymphatic disorders. Results: Twenty-three patients (fifteen males and eight females) with chylous leakage were included in this study, with an average age of 59.78 ± 13.08 years. Non-enhanced MRL, ⁹⁹Tc^m-DX lymphoscintigraphy, and intranodal lymphangiography revealed TD outlet obstructions in 13, 17, and 18 patients, respectively. Twenty patients exhibited findings consistent with preoperative imaging during TD explorations; the intraoperative microscopic visualization demonstrated the difficulty of white chyle entering the bloodstream for these patients. The ROC curve analysis indicated that “at least two imaging modalities were positive” and had the highest Area Under the Curve (AUC) value (0.90); “intranodal lymphangiography” and “non-enhanced magnetic resonance lymphangiography” followed closely with respective AUC values of 0.76 and 0.73, and ⁹⁹Tc^m-DX lymphoscintigraphy exhibited a lower AUC value 0.63. Conclusions: The combined utilization of multimodal lymphatic imaging techniques demonstrated a high diagnostic accuracy in identifying TD outlet obstruction in patients with chylous leakage. Full article

Background and Objectives: Lymphedema is a chronic and progressive condition that leads to significant morbidity, including recurrent infections, fibrosis, and functional limitations. Conservative treatments often offer limited relief, particularly in severe cases. Vascularized lymph node transfer (VLNT), especially using the gastroepiploic lymph node flap, has emerged as a promising intervention. This study evaluates the long-term outcomes of gastroepiploic VLNT combined with suction-assisted lipectomy (SAL) for extremity lymphedema. Materials and Methods: A retrospective review was conducted on 53 patients treated for lymphedema at our clinic in Taiwan from January 2016 to August 2023. The inclusion criteria required patients to have persistent lymphedema for at least six months despite conservative treatment. VLNT was performed using a laparoscopic approach, and postoperative assessments included limb circumference measurements, lymphoscintigraphy, and tonicity evaluations. Results: Follow-up data were collected for a minimum of 12 months. At a mean follow-up of 14.2 months, significant reductions in limb circumference were observed—35.5% ± 24.9% for upper limbs and 32.2% ± 4.5% for lower limbs. Tonicity improved by 6.2%, and no cellulitis episodes were reported post-surgery. Minor complications included hematoma and sensory changes, with no major donor-site morbidity. Lymphoscintigraphy confirmed improved lymphatic drainage. Conclusions: Gastroepiploic VLNT combined with SAL is an effective and safe treatment for severe extremity lymphedema, providing significant improvements in limb size and tissue tonicity. This technique offers a promising solution for refractory cases. Full article

A 30-year-old woman presented with progressive edema and mild diarrhea. Laboratory examination revealed hypoalbuminemia. She underwent ^99mTc-antimony sulphide colloid (^99mTc-ASC) lymphoscintigraphy to evaluate potential loss of protein through gastrointestinal tract caused by lymphatic leakage and detect abnormalities in the lymphatic systems. The images showed abnormal leakage of radiotracers in the bowel, suggestive of protein loss through the gastrointestinal tract. Abnormal visualization of the lower part of thoracic duct and bilateral venous angle was also demonstrated on ^99mTc-ASC scintigraphy. It suggested secondary intestinal lymphangiectasis caused by lymphatic obstruction and reflux. Enhanced CT reconstruction of the small intestine revealed roughness and thickening of intestinal wall, consistent with the diagnosis of protein-losing enteropathy. Full article

Objectives: To assess the efficacy of magnetic resonance (MR) lymphography with gadobutrol contrast for sentinel lymph node (SLN) mapping in early-stage oral squamous cell carcinoma (OSCC). Methods: This pilot study compared the identification of SLNs by MR lymphography using a gadolinium-based contrast agent (gadobutrol) to conventional [^99mTc]Tc-nanocolloid lymphoscintigraphy (including single-photon emission computed tomography/computed tomography (SPECT/CT)) in 10 early-stage OSCC patients undergoing SLN biopsy. The patients initially underwent conventional lymphoscintigraphy following the peritumoral administration of indocyanine green [^99mTc]Tc-nanocolloid (120 megabecquerel; ~0.5 mL). Subsequently, 0.5–1.0 mL gadobutrol was peritumorally injected, and MR imaging was acquired for 30 min. The following day, the identified SLNs were harvested and subjected to a histopathological assessment. The MR lymphography and [^99mTc]Tc-nanocolloid lymphoscintigraphy results were evaluated and compared with respect to those of the SLN identification. The reference standard consisted of a histopathological evaluation of the harvested SLNs, complementary neck dissection specimens, and follow-up data. Results: The MR lymphography detected 16 out of 27 SLNs identified by [^99mTc]Tc-nanocolloid lymphoscintigraphy, revealing an additional SLN that did not harbor metastasis. MR lymphography failed to identify any SLNs in one patient. Of the seven histopathologically positive SLNs detected by [^99mTc]Tc-nanocolloid lymphoscintigraphy, three were identified by MR lymphography. All patients remained disease-free after a median follow-up of 16 months. Compared to [^99mTc]Tc-nanocolloid lymphoscintigraphy, MR lymphography using gadobutrol achieved an SLN identification rate of 59%, a sensitivity of 75%, and a negative predictive value of 86%. Conclusions: MR lymphography using gadobutrol demonstrates limited reliability for SLN mapping in early-stage OSCC. Full article

A healthy 54-year-old man previously presented to vascular surgeons with a 4-year history of swelling of the penis and scrotum was scheduled for ultrasound evaluation in the angiology office in our department. At presentation, there was a giant enlargement of the penis and scrotum, without swelling of the legs. Ultrasound evaluation was negative for vascular abnormalities. A diagnosis of chronic lymphatic disease was suspected; thus, a lymphoscintigraphy was performed. This test was normal showing, a good visualization of major lymphatics. The patients had a history of psoriasis with a documented previous event of flexural psoriasis involving his genitals with secondary infection 4 years before. Since that infection, his genitals progressively increased in size, and despite medical treatment and different surgical evaluations, the patient’s symptoms have not resolved, with marked disability associated with walking and sexual activity. Full article

Lymphoscintigraphy evaluates the lymphatic system using radiocolloid compounds like ^99mTc-sulfur colloid and ^99mTc-nanocolloid, which vary in particle size and distribution timing. A local in-house Dextran kit (15–40 nm) was developed in 2005 and began clinical use in 2008 to localize sentinel lymph nodes; diagnose lymphedema; and detect lymphatic leakage. The normal drainage pattern remains unexplored. We retrospectively analyzed 84 upper extremity lymphoscintigraphies from 2008 to 2021. ^99mTc in-house Dextran was intradermally injected into both hands, followed by whole-body imaging at specified intervals (≤15 min; 16–30 min; 31–45 min; 46–60 min), with some receiving delayed imaging. Visual and quantitative analyses recorded axillary and forearm lymph nodes and liver, kidney, and urinary bladder activity. Results showed 92% (77/84) upper extremity lymphatic tract visualization within 45 min. Axillary node detection rates increased from 46% (≤15 min) to 86% (46–60 min). Delayed imaging further revealed nodes. Epitrochlear or brachial node visualization was rare (4%, 3/84). Hepatic, renal, and urinary bladder activity was noted in 54%, 71%, and 93% at 1 h, respectively. The axillary node uptake ratio was minimal (<2.5% of injection site activity; median 0.33%). This study characterizes normal upper extremity lymphatic drainage using ^99mTc in-house Dextran, offering insights into its clinical application Full article

Background: This study assessed the topography and lateralization of lymph node (LN) metastases in muscle-invasive bladder cancer (MIBC) patients using super-extended pelvic lymph node dissection (sePLND) with sentinel lymph node dissection (SLND). Methods: We analyzed 54 MIBC patients who underwent cystectomy with sePLND and SLND. Tumor location was classified using cystoscopy. Nanocolloid-Tc-99m was injected peritumorally. Preoperative SPECT/CT lymphoscintigraphy and an intraoperative gamma probe were used for SLN detection. Results: A total of 1414 LNs, including 192 SLNs, were resected from 54 patients. Metastases were found in 72 LNs from 22 patients (41%). The obturator fossa was the primary site for LN metastases (37.5%). SLNs were most common in the external iliac region (34.4%). In 36% of the patients with positive LNs, metastases were identified only through sePLND. In 9% of the patients, metastases were found solely in the pararectal region, identified through SLND. Tumor lateralization correlated with ipsilateral positive LNs, but 20% of the patients had contralateral metastases. Conclusions: The pararectal region may be the exclusive site for positive LNs in MIBC. The obturator fossa is the most prevalent region for LN metastases. Unilateral PLND should be avoided due to the risk of contralateral metastases. Combining sePLND with SLND improves staging. Full article

Sentinel lymph node biopsy (SLNB) is currently considered as a viable alternative to elective neck dissection (END) for the management of cN0 oral cavity squamous cell carcinoma (OCSCC). However, some difficulties were detected in sentinel lymph node (SLN) identification in floor of mouth (FOM) and ventral tongue tumors because of the so-called “shine-through radioactivity” of the injection site, which may mask nodal hotspots in proximity. We assessed the feasibility and the potential strengths of combining ^99mTc-Tilmanocept with indocyanine green (ICG) fluorescence lympho-angiography in a dedicated multimodal protocol for SLNB in T1/T2N0 oral cancer to evaluate the synergistic role of each of these two tracers in providing the appropriate sensitivity and ease of learning, even in such a critical anatomical subsite. A detailed, stepwise description of our multimodal protocol is provided, together with the presentation of its application in two cases of early-stage ventral tongue tumors. Radioactive guidance with ^99mTc-Tilmanocept was used preoperatively to perform planar lymphoscintigraphy and single-photon emission computed tomography/computed tomography and to define the nodal hotspot(s) and the surgical “roadmap”. In addition, it was used intraoperatively to pinpoint the SLN location within each nodal hotspot with high specificity but limited spatial resolution. Optical guidance with ICG injection at the tumor bed and near-infrared fluorescence imaging was then added, providing intuitive intraoperative guidance within each nodal hotspot with high spatial resolution. Our small experience with this protocol is illustrated and future perspectives are highlighted. Full article

The standard of care approach to identify sentinel lymph nodes (SLNs) in clinically non-metastatic cutaneous melanoma patients is technetium (Tc)-based lymphoscintigraphy. This technique is associated with radiation exposure, a long intervention time, high costs, and limited availability. Indocyanine green (ICG)-based near-infrared fluorescence imaging offers a potential alternative if proven to be of comparable diagnostic accuracy. While several clinical cohorts have compared these modalities, no systematic review exists that provides a quantitative analysis of their results. Hence, a systematic literature review was conducted in December 2023 considering clinical studies comparing the diagnostic accuracy of ICG and Tc for sentinel lymph node biopsy in cutaneous melanoma patients. Three hundred nineteen studies were identified and further screened in accordance with the PRISMA 2020 guidelines, resulting in seven studies being included in the final meta-analysis. Tc identified a significantly higher number of SLNs and metastatic SLNs in prospective studies only. However, in the overall meta-analysis of all included comparative studies, no significant differences were found regarding the identification of metastatic patients or the false negative rate (FNR). ICG may be a non-inferior alternative to Tc for intraoperative guidance in sentinel lymph node biopsy in cutaneous melanoma patients. Future randomized controlled trials are needed, especially regarding the preoperative, transcutaneous identification of the affected lymph node basin. Full article