Chrysovalantis Stylianou

Dr. Chrysovalantis Stylianou

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 December 2021 in Cureus
Verified
Journal Article
Open access
SDSavvas P. Deftereos
Savvas P. Deftereos
VBVasileios Balomenos
Vasileios Balomenos
KFKonstantinos Frigkas
Konstantinos Frigkas
CSChrysovalantis Stylianou
Chrysovalantis Stylianou
SFSoultana Foutzitzi
Soultana Foutzitzi
Hysterosalpingography (HSG) is an imaging method performed to assess tubal occlusion in cases of infertility, ectopic pregnancy, and hyperplasia. Although venous intravasation (VI) is a rare occurrence during HSG, it is associated with thromboembolic episodes and misinterpreted HSG. We present a rare case report of a 41-year-old female who underwent HSG and the introduction of contrast medium to the pelvic drainage system via the uterine cavity and the myometrium.

2 February 2025 in Cureus
Verified
Journal Article
Open access
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CSChrysovalantis Stylianou
Chrysovalantis Stylianou
IGIoannis Gogoulis
Ioannis Gogoulis
VKVaia Karapepera
Vaia Karapepera
KCKonstantinos Chaidas
Konstantinos Chaidas
MKMichael Karanikas
Michael Karanikas
Parenchymal organ rupture is a serious emergency condition most commonly occurring in abdominal or thoracic viscera, whereas blunt neck trauma affecting the thyroid is rarely documented. We present the case of a 43-year-old male who sustained a blunt cervical trauma and presented with neck haematoma, respiratory discomfort, and hoarseness. The diagnosis of thyroid gland rupture of the left lobe was made via ultrasonography and computed sonography scans. The patient was admitted to the hospital for close monitoring and was managed conservatively. The patient recovered uneventfully and was discharged in good health after seven days.

31 August 2023 in Acta Medica Academica
Verified
Journal Article
Open access
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CSChrysovalantis Stylianou
Chrysovalantis Stylianou
SDSavas Deftereos
Savas Deftereos

26 December 2025 in Cureus
Verified
Journal Article
Open access
HMHippocrates Moschouris
Hippocrates Moschouris
CSChrysovalantis Stylianou
Chrysovalantis Stylianou
TATheodora Adamaki
Theodora Adamaki
DEDimitra Eirini Evripidi
Dimitra Eirini Evripidi
KAKonstantinos Arvanitidis
Konstantinos Arvanitidis
Renal cell carcinoma (RCC) is a relatively common malignancy and is often diagnosed incidentally in imaging in early stages, where interventional radiologic techniques provide competent treatment options with minimal risk for major complications. A 72-year-old woman diagnosed with a 5 cm tumor of her right kidney in computed tomography (CT) with typical findings of RCC opted for percutaneous interventional treatment instead of surgical treatment. Transarterial embolization (TAE), followed by ultrasonographically guided microwave ablation (MWA), was performed with no immediate post-interventional complications. The patient returned 10 weeks post MWA with right flank pain and hematuria, and CT revealed almost complete necrosis at the original tumor site but also significant tumor extension in the upper calyces and pelvis of the right kidney. This was histologically confirmed after nephroureterectomy. The complication is thought to be unrelated to the TAE, and cell implantation potentially occurred due to calyceal penetration during antenna placements. TAE and thermal ablation are established techniques for managing locoregional disease. Urinary tract invasion by treatment-naive RCC has been reported in the literature; however, invasion of the pelvicalyceal system by RCC as a result of ablation should be considered an extremely unusual, unexpected, and severe complication, which impairs the prognosis.

11 September 2026 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
KCKonstantinos Chaidas
Konstantinos Chaidas
MZMaria Zisoglou
Maria Zisoglou
CSChrysovalantis Stylianou
Chrysovalantis Stylianou
DADimitrios P Askitis
Dimitrios P Askitis
HMHippocrates Moschouris
Hippocrates Moschouris
Michael KatotomichelakisMichael Katotomichelakis
Michael Katotomichelakis
Background/Objectives: Ultrasound-guided microwave ablation (MWA) has emerged as an effective minimally invasive treatment for benign thyroid nodules, but practical guidance regarding implementation of the technique within otorhinolaryngology practice remains limited. This study aimed to describe the implementation of ultrasound-guided MWA for benign thyroid nodules in a tertiary ENT center, with emphasis on technical considerations, procedural safety, and early clinical outcomes. Methods: A retrospective analysis of prospectively collected data included consecutive patients seen at the ENT outpatient clinic between March 2024 and July 2025. All procedures were performed by a single ENT surgeon, and technical aspects were described. Procedural characteristics, pain, complications, nodule volume reduction, compressive symptoms, cosmetic outcomes, and thyroid function were evaluated through 3-month follow-up. Results: Twenty-five patients underwent ultrasound-guided MWA for 30 benign thyroid nodules. All procedures were successfully completed under local anesthesia. No major complications occurred; two patients developed minor, self-limiting ecchymosis. Median nodule volume decreased from 12.77 mL (IQR, 4.13–17.74) at baseline to 3.81 mL (IQR, 1.31–7.60) at 3 months, corresponding to a mean volume reduction ratio of 63.8%. Significant improvements in compressive symptoms and cosmetic scores were observed (p < 0.001). All patients remained euthyroid, with no cases of new-onset hypothyroidism. Conclusions: This early experience supports the feasibility and short-term procedural safety of ultrasound-guided MWA for selected benign thyroid nodules within an ENT setting. Careful patient selection, meticulous technique, and structured operator training appear to be key components for successful implementation. Beyond its favorable early clinical outcomes, this study provides a practical framework for centers seeking to establish thyroid MWA programs.

6 December 2021 in Cureus
Verified
Journal Article
Open access
EKEmmanuel Kontomanolis
Emmanuel Kontomanolis
CSChrysovalantis Stylianou
Chrysovalantis Stylianou
SMStyliani Mitropoulou
Styliani Mitropoulou
VBVasileios Balomenos
Vasileios Balomenos
VSVasileios Souftas
Vasileios Souftas
Introduction: The purpose of this case report is to present the case of a 49-year-old female individual with uterine fibroids, who underwent a subtotal hysterectomy after prior unsuccessful uterine artery embolization. Uterine artery embolization is a minimally-invasive technique used as an additional option for the treatment of symptomatic fibroids. The method is a promising technique, indicated for female individuals of reproductive age wishing to preserve their uteri. Case Presentation: The patient presented symptoms of bloating and menorrhagia. Magnetic Resonance Imaging revealed uterine enlargement and elongation, with several fibroids and urinary bladder deformation caused by the enlarged uterus and the numerous fibroids compressing the uterine apex. She was referred for uterine artery embolization. In the three-year follow-up imaging, no alteration of the uterus' size was observed, while two fibroids were noted, suggesting necrosis or malignancy based on imaging findings, which led to the conduction of partial hysterectomy while leaving the cervix intact. Discussion: Uterine artery embolization is regarded as a safe and successful procedure. However, in case of ineffectiveness, full or partial hysterectomy is considered as the ultimate treatment of choice. Conclusion: According to the available literature, uterine artery embolization is promoted to be an efficient alternative option to surgery. Patients should be offered adequate medical consultation on all the treatment options and possible complications.