Hemangiomas and vascular malformations: current theory and management

A giant pelvic arteriovenous malformation

Introduction

Pelvic arteriovenous malformations are rare in male patients. We present a case of pelvic arteriovenous malformation involving the seminal vesicle.

Case presentation

A 58-year-old man was diagnosed with pelvic arteriovenous malformation that involved the left seminal vesicle by angiography. The patient underwent three embolization procedures and made favorable progress after the embolizations.

Conclusion

Herein, we report a rare case of pelvic arteriovenous malformation involving the seminal vesicle treated by embolizations with good outcome.

Phleboliths of venous malformation studied with scan electron microscopy. Case report and literature review

Vascular anomalies are classified in two categories, vascular tumors and vascular malformations. Among the latter, venous malformations are the second most common vascular anomalies. In addition to pain and/or increase of volume, venous malformations can lead to phlebolith formation with time. We present the case of a female patient of 17 years of age, with a tumoration of four centimeters of diameter, located in the submentonian region, with nine calcified foci identified by three-dimension reconstruction. The calcifications were studied with scanning electron microscopy, detecting mainly the presence of carbon, oxygen and calcium. Regarding the tissue organization, it was possible to observe the development of filamentous aggregates of carbon macroparticles. As an important part of the evaluation for diagnostics and for the treatment of vascular anomalies, it is necessary to do a complete clinical history, and the clinic evaluation of the lesion should be complemented with imagenology studies. This will allow identification of the size and extension of the lesion and the presence of calcifications, which must be considered as a presumptuous diagnosis to vascular lesion. Key words:Vascular anomalies, vascular tumors, vascular malformations, phlebolith.

Infantile Hemangioma in Infancy: A Case Study on the Natural Course and Therapeutic Management

Infantile hemangiomas (IHs) are common benign vascular tumors that affect infants. In this case report, we detail the natural course of an IH in an infant monitored over four months without medical intervention, illustrating the benign progression and potential for spontaneous stabilization of such lesions. The aim was to observe changes in the size and morphology of the hemangioma, alongside the infant's overall health and developmental milestones, through regular clinical assessments. This case presented a challenge as the patient's parents lacked English fluency, lacked healthcare access, and had low socioeconomic status. It highlights the importance of individualized patient care, advocating for careful observation and restraint in the application of pharmacological treatments when clinically unnecessary. The report contributes to existing pediatric dermatology knowledge by emphasizing the natural benign behavior of IH and the need for a balanced approach to treatment decisions, ensuring safe and favorable long-term outcomes for patients.

Excision of arteriovenous malformation in an emergency situation - A case report

An arteriovenous malformation (AVM) is an infrequent congenital vascular anomaly that can affect the vasculature and involve the endothelium and neighboring cells of any anatomical structure. AVMs are characterized histologically by abnormal AV shunts with atypical interconnecting capillary beds. AVM can cause functional and esthetic issues like face asymmetry, pain, osteolytic changes, and unanticipated hemorrhage or squeeze and tear of the surrounding tissue without causing any symptoms. The literature search yielded limited case reports on AVMs in the facial region. Insufficient diagnosis, limited knowledge, and a lack of literature can lead to severe bleeding and potentially fatal hemorrhagic incidents following dental procedures like tooth extraction, surgery, puncture wounds, or blunt injuries in the affected area. In this manuscript, we report a case of AV malformation involving the left cheek and buccal mucosa region in a 37-year-old male patient who reported uncontrolled bleeding after trauma. This report highlights the management of AV malformation in an emergency by facial artery ligation and surgical excision.

A Review of the Current State and Future Directions for Management of Scalp and Facial Vascular Malformations

Vascular malformations are structural abnormalities that are thought to result from errors in vasculogenesis and angiogenesis during embryogenesis. Vascular malformations of the scalp present unique management challenges due to aesthetic and functional implications. This review examines the pathophysiology, clinical presentation, and management techniques for six common types of vascular malformations of the face and scalp : infantile hemangioma, capillary malformations, venous malformations, lymphatic malformations, arteriovenous malformations, and arteriovenous fistulas. These lesions range from common to rare, and have very different natural histories and management paradigms. There has been increasing understanding of the molecular pathways that are altered in association with these vascular lesions and these molecular targets may represent novel strategies of treating lesions that have historically been approached from a structural perspective only.

Whole-lesion assessment of volume and signal changes after sclerotherapy of extremity venous malformations

PURPOSE

To investigate quantitative changes in MRI signal intensity (SI) and lesion volume that indicate treatment response and correlate these changes with clinical outcomes after percutaneous sclerotherapy (PS) of extremity venous malformations (VMs).

METHODS

VMs were segmented manually on pre- and post-treatment T2-weighted MRI using 3D Slicer to assess changes in lesion volume and SI. Clinical outcomes were scored on a 7-point Likert scale according to patient perception of symptom improvement; treatment response (success or failure) was determined accordingly.

RESULTS

Eighty-one patients with VMs underwent 125 PS sessions. Treatment success occurred in 77 patients (95 %). Mean (±SD) changes were -7.9 ± 24 cm3 in lesion volume and -123 ± 162 in SI (both, P <.001). Mean reduction in lesion volume was greater in the success group (-9.4 ± 24 cm3) than in the failure group (21 ± 20 cm3) (P =.006). Overall, lesion volume correlated with treatment response (ρ = -0.3, P =.004). On subgroup analysis, volume change correlated with clinical outcomes in children (ρ = -0.3, P =.03), in sodium tetradecyl sulfate-treated lesions (ρ = -0.5, P =.02), and in foot lesions (ρ = -0.6, P =.04). SI change correlated with clinical outcomes in VMs treated in 1 PS session (ρ = -0.3, P =.01) and in bleomycin-treated lesions (ρ = -0.4, P =.04).

CONCLUSIONS

Change in lesion volume is a reliable indicator of treatment response. Lesion volume and SI correlate with clinical outcomes in specific subgroups.

Retrospective Study of Clinicopathological Changes and Prediction Model for Canine Vascular Neoplasms

Vascular neoplasms, including hemangiosarcoma (HSA) and hemangioma (HMA), are more common in dogs than other domestic animal species; however, comprehensive laboratory screening tests for early diagnosis are currently limited. The aims of this study were to investigate general signalments, anatomic locations, and clinicopathological abnormalities of dogs diagnosed with vascular neoplasms and to determine the diagnostic significance of these abnormalities. Retrospective data of dogs with HMA, HSA, and healthy dogs were analyzed. Dogs with HMA and HSA were seniors, with mixed breeds being most affected. HMA affected predominantly non-visceral sites, while HSA was more common in visceral sites, particularly the spleen. In multivariate model analyses, the odds of HMA diagnosis were 5.5 times higher in anemic dogs and 33.0 times higher in lymphopenic dogs compared to dogs without the abnormalities. The odds of HSA diagnosis were 42.5 times higher in anemic dogs, 343 times higher in lymphopenic dogs and 92.7 times higher in dogs with hyperfibrinogenemia compared to dogs without the abnormalities. The study suggested that these identified abnormalities were nonspecific and commonly observed in various chronic diseases, and hence their combination with clinical information, such as diagnostic imaging and histopathology, is important to facilitate a more precise diagnosis of canine vascular neoplasms.

Incidental Breast Hemangioma on Breast MRI: A Case Report

Vascular tumors of the breast are rare, but benign hemangiomas are the most common type. Capillary hemangiomas are a subset of benign vascular tumors that involve smaller vessel sizes. They are difficult to diagnose with mammography and ultrasound, as they lack pathognomonic features and are frequently not seen. MRI is the most sensitive imaging tool. The lesions appear similar to angiosarcoma or ductal carcinoma in situ on imaging, which further complicates the diagnosis. A biopsy of the lesions is required for a definitive diagnosis. In this report, a 49-year-old female with newly diagnosed breast cancer is incidentally found to have a capillary hemangioma on staging breast MRI that was confirmed with a biopsy and excised along with the primary breast cancer with a partial mastectomy. The imaging findings of breast hemangioma on mammography, ultrasound, and MRI are also reviewed and described in this report.

Massive spinal epidural infantile hemangioma, image findings, and treatment: a case report and review of literature

Spinal involvement of infantile hemangiomas is rare with the predilection to involve the epidural space. A proper diagnosis might be challenging due to the atypical location and variable/inconsistent use of the International Society for the Study of Vascular Anomalies (ISSVA) classification by radiologists, pathologists, and clinicians. A proper diagnosis of epidural infantile hemangioma is key due to the different aggressiveness of the treatment options with inconstant literature regarding the best available treatment. Herein, we present a case of a massive epidural infantile hemangioma successfully treated with only beta-blocker. We discuss the clinical, MRI, CT, ultrasound, and histological features of this lesion as we review the literature with the objective of addressing some of the confusion surrounding the subject.

Noninvoluting congenital hemangiomas with hypovolemic shock, anemia and prolonged jaundice in a neonate: a case report

Noninvoluting congenital hemangioma is an extremely rare congenital anomaly in newborn babies and may complicate life-threatening events, including hemorrhage. We present a very rare case of noninvoluting congenital hemangiomas in an Asian and Afghan six-day-old girl that was detected at birth. The noninvoluting congenital hemangiomas were accompanied by hypovolemic shock, anemia, and prolonged jaundice during the first two weeks of life. These diseases were diagnosed by medical history, physical examination, blood analysis, and doppler ultrasonography of the skin lesions. Her hypovolemic shock and hemorrhage were improved after supportive treatment, and she was discharged from the hospital in a good condition. After four weeks of life, the hemangiomas did not regress or progress, suggesting noninvoluting congenital hemangiomas. Hemangioma may complicate severe hemorrhage and shock, as well as there may be an association between congenital hemangioma and prolonged neonatal jaundice.

Super-selective Embolisation and Surgical Excision of the Facial Arteriovenous Malformation

Vascular anomalies broadly include vascular tumours and malformations. Arteriovenous malformations (AVM), though rare in the oral and maxillofacial regions, can present with swelling, facial asymmetry, ulceration, and bleeding tendencies, which can be life-threatening. Thus, to minimise the associated life-threatening consequences, prompt and appropriate diagnosis of the lesion is necessitated. The management of the AVM is a therapeutic challenge for maxillofacial surgeons; however, technological advances in interventional radiology have gained a foothold. Super-selective embolisation of the feeder vessels with subsequent resection of the lesion is the most widely accepted approach for management. The present report describes a unique case of a facial AVM managed through a trans-oral approach without any post-operative sequelae.

Hamartomas, choristomas, and teratomas of the oral cavity: A 49-years cross-sectional study in an oral diagnostic service

BACKGROUND

To investigate the incidence and demographic profile of hamartomatous, choristomatous, and teratoid lesions in a Brazilian population over a 49 years-period.

METHODS

A retrospective cross-sectional study was performed, and data regarding demographic and clinical aspects were obtained from the medical records of a [removed for blind peer review] referral center (1970-2019). The collected data were submitted to descriptive analysis and Pearson's chi-square, Fisher's exact, and Kruskal-Wallis tests (p ≤ 0.05).

RESULTS

In a total of 16,412 medical records analyzed, 300 (1.83 %) were hamartomatous, 2 (0.01 %) choristomatous, and 1 (0.01 %) teratoid lesions. Hamartomas were most diagnosed in females and adults. Statistical significance was observed between hamartoma and age group (p < 0.001). Odontoma was the most frequent hamartomatous lesion. In choristomatous and teratoid lesions, there was no occurrence in males. The jaws were the most affected anatomical site by hamartoma. Choristomas were observed on the mandible and tongue, while a teratoid lesion was seen on the floor of the mouth.

CONCLUSIONS

Low occurrence of choristomatous and teratoid lesions over hamartomatous lesions and a heterogeneous occurrence profile regarding sex, age group, and anatomic site were observed. Hamartomas are relatively common and benign conditions that may cause damage and require special care during dental treatment. Thus, the dentist needs to be able to identify and treat them appropriately. Likewise, although choristomas and teratomas present no risk to patients and have a lower occurrence than hamartomas, they also require treatment.

Wide Resection for Pediatric Extremity Vascular Malformation-A Tertiary Hospital's Experience

BACKGROUND

Vascular malformations of the extremities (VM) are common benign lesions that tend to grow throughout the patient's lifetime. They can cause various issues like pain, swelling, and even limb length discrepancies. Sclerotherapy was the preferred treatment choice in previous studies. However, sclerotherapy and many other treatments have the potential to result in higher recurrence rates. Surgical treatment has been shown to be effective and safe in many cases. Hence, this study aims to evaluate the suitability of wide resection surgery for VM to reduce recurrence.

METHODS

Fort-seven VM cases that underwent wide resection were identified retrospectively in the institution of study. Demographics, depth of malformation, whether malformations were local or diffuse, location and size of malformations, and histology records were taken note of. Records of recurrence and postoperative function were also gathered. We utilized self-reported questionnaires, QuickDASH and Lower Extremity Functional Scale, to determine patients' postsurgical physical function.

RESULTS

Out of 47 cases that underwent wide resection, we found a recurrence rate of 2.1%. No patients sustained any loss of function postsurgery, with few patients experiencing minor complications like tenderness, hypertrophic scars/keloids, as well as numbness. Good functionality posttreatment was also seen through self-reported questionnaires, with an average score of 2.12 for QuickDASH and 99.96% for LEFS.

CONCLUSION

Where margins can be obtained without functional impairment, surgical-wide resection for VM is a viable treatment option to minimize recurrence.

LEVEL OF EVIDENCE

Level-IV.

Cavernous hemangioma of corpus imitating endometrial polyp in a young non-pregnant woman: A case report study

Key Clinical Message

Cavernous hemangiomas are rare and have various non-specific clinical presentations, such as menorrhagia. It can mimic different diseases such as endometrial polyps. Pathologists and gynecologists should be aware of performing histopathological examinations of this neoplasm for accurate diagnosis and to avoid unwarranted therapeutic interventions.

Abstract

Internal genital tract hemangiomas are rare and can be divided into capillary and cavernous. We present a rare case of cavernous hemangioma (CH) of the corpus in a young, non-pregnant woman. The patient was a 28-year-old woman who had complained of menorrhagia for 2.5 years. Sonography showed a hypoechoic intramural area measuring 35 × 23 mm. Histomorphology revealed neoplastic proliferation of dilated thin-walled arteries of various sizes within the myometrium. Due to the variable clinical presentations of CH, histopathological examination should be performed for an accurate diagnosis. It is a rare entity and we recommend training pathologists and gynecologists on this neoplasm for accurate diagnosis and to avoid unwarranted therapeutic interventions.

Venous malformation phleboliths mimicking submandibular sialadenitis in children

To report one paediatric patient who presented with a rare venous vascular malformation as a mass in the left submandibular region with a clinical picture compatible with sialadenitis. Phleboliths are a specific feature of venous malformations due to venous stasis and may mimic sialoliths on various imaging modalities. Thus venous malformations are often misdiagnosed as sialadenitis due to sialolithiasis. Sialoliths are extremely rare in paediatric patients. In an early adolescent presenting with a submandibular mass and suspected sialadenitis arising from sialoliths, a detailed history, clinical examination and careful review of the radiological findings will allow the diagnosis of venous vascular malformation and provide the complete surgical resection. Our patient was initially referred with a presumed diagnosis of submandibular sialadenitis, and instead a venous malformation with phlebolith was diagnosed.

Cavernous hemangioma of the lip: combined treatment with intralesional laser and surgery

Infantile cavernous hemangioma is a benign vascular tumor in childhood. Cavernous hemangiomas have a tendency of slow enlargement with subsequent complications such as ulceration and bleeding. We report a case of a large cavernous hemangioma affecting the median upper lip in an 11-year-old girl. The lesion was growing and painful on pressure. The patient felt stigmatized. Treatment was wished for by patient and parents. After careful examination including Doppler ultrasound, we suggested a combined approach. In the first step the lesion was coagulated with an intralesional neodymium-YAG laser using a blunt tip. In the second step, immediately after the action of the laser, the lesion was removed completely by surgery. Defect closure was realized with bilateral tissue-expanding vermillion myocutaneous flaps. The patient was followed-up to 5 months. Disfigurement and functional impairment were eliminated. The result was satisfying for both patient and parents. Vascular lesions of the upper lip-particularly when close to Cupid's bow-can become disfiguring and cause functional impairment. We propose a combined approach with intralesional neodymium-YAG laser photocoagulation to avoid bleeding and to shrink the lesion before complete surgical removal. For defect closure, bilateral tissue-expanding vermillion myocutaneous flaps (Goldstein technique modified by Sawada) were used.

Doxycycline sclerotherapy in patients with periorbital lymphatic malformation: A case series and literature review

PURPOSE

To describe and report the outcomes of doxycycline sclerotherapy in patients with periorbital lymphatic malformations(LMs).

BASIC PROCEDURES

A retrospective review of consecutive patients diagnosed with periorbital LMs and who received doxycycline sclerotherapy at Hong Kong Eye Hospital and Queen Elizabeth Hospital, Hong Kong between January 2016 and June 2022. Doxycycline was prepared with a concentration of 100 mg diluted in 10 mL water for injection. A 23-gauge needle aiming at the center of the macrocyst was used to aspirate fluid from the lesion; this was then followed by an intralesional injection of 0.5 to 2 ml of doxycycline depending on the size of the cavity.

MAIN FINDINGS

A total of eight patients(six females) were included in this study. All of them received doxycycline sclerotherapy for periorbital LMs(five extraconal, three intraconal). The median age for receiving sclerotherapy was 29 years old. Seven patients had macrocystic LMs, and one had mixed macro- and microcystic LM. Two of the LMs had venous components radiologically. The average number of sclerotherapy treatment in one patient was 1.4 ± 0.7times. Seven of the eight patients had excellent response radiologically or clinically. One patient showed a satisfactory response after three cycles of sclerotherapy. No recurrence was experienced at median follow-up of 14 months. None of the patients experienced visual threatening or systemic complication.

PRINCIPLE CONCLUSIONS

Our preliminary experience with doxycycline sclerotherapy has shown encouraging results for the treatment of macrocystic or mixed-type periorbital LMs, with a favourable safety profile. Further clinical trials with longer follow-ups are warranted on this topic.

Intraosseous hemangioma of the mandible: A rare case report

INTRODUCTION AND IMPORTANCE

Intraosseous hemangioma is a benign vascular tumour, it is mostly seen in long bones, vertebrae, and rarely on jaw bones, it usually occurs with its cavernous form. Medical literature is lacking a full description of capillary hemangioma of the jaws due to its rareness.

CASE PRESENTATION

A 68 year old male referred to the dentist for normal checking, without significant medical history nor presuming medications. The panoramic radiograph showed radiolucent lesion in the right mandibular body. Surgery was performed and the excisional biopsy was subjected to a private oral pathology lab for the definite diagnosis, which was capillary hemangioma.

CLINICAL DISCUSSION

Intraosseous hemangioma rarely occurs in the jaws. Normally it is asymptomatic and discovered accidently on radiographs. Radiological findings for intraosseous hemangiomas are not well documented. Treatment of intraosseous capillary hemangioma differs according to the dimension and size of the lesion.

CONCLUSION

This paper aims to guide the clinician to start including hemangioma in the differential diagnosis for translucent lesions located in the jawbones, when radiographs show the necessity of that, in order to avoid uncontrollable bleeding and even death during any surgical intervention.

Vascular Malformations and Tumors: A Review of Classification and Imaging Features for Cardiothoracic Radiologists

The International Society for the Study of Vascular Anomalies (ISSVA) classification is a comprehensive histology-based scheme that was updated in 2018. It is important for cardiothoracic imagers to understand this classification to ensure that accurate terminology is used and that archaic terms are avoided when vascular lesions are described. Knowledge of the various malformations (including common conditions, such as venous malformation, arteriovenous fistula, and arteriovenous malformation) and vascular tumors allows for timely diagnosis and appropriate management. This review describes various vascular anomalies, in accordance with ISSVA classification and terminology; highlights key imaging features associated with each; and discusses the role of different imaging modalities. Keywords: Pulmonary, Soft Tissues/Skin, Vascular, Arteriovenous Malformation © RSNA, 2023.

Differential pericyte marker expression in craniofacial benign and malignant vascular tumors

BACKGROUND

Vascular anomalies and tumors are common in the head, neck, and craniofacial areas and are associated with abnormalities in the angiomatous architecture. However, the etiology and molecular basis for the pathogenesis of most vascular lesions are still unknown. Pericytes are mural cells that surround endothelial cells. Besides angiogenesis and other physiological functions, pericytes play an important role in vascularized tissue repair and as resident mesenchymal stem/progenitor cells. Perivascular cells demonstrate a distinct immunohistochemical profile, including expression of alpha-smooth muscle actin (α-SMA), CD146, CD105, and PDGFRβ, without endothelial differentiation (absence of CD31 and CD34 immunoreactivity). These pericyte markers have been shown to be expressed in soft tissue hemangiomas. However, they have not been fully examined in intraosseous hemangiomas.

METHODS

In this study, we compared mesenchymal stem cell (MSC) expression of CD146 and α-SMA markers in pericytes from hemangiomas from different tissues and malignant vascular tumors.

RESULTS

The results demonstrated an increased expression of pericyte markers in perivascular cells of benign hemangiomas, especially intraosseous hemangiomas and a significantly reduced expression of pericyte markers in malignant angiosarcomas.

CONCLUSION

The evidence provides insight into the function of pericytes in vascular tumors and suggests their role in vascular tumor disease types.

A Rare Case of Adult Vocal Cord Hemangioma: A Case Report and Literature Review

Infantile laryngeal hemangiomas are relatively common. However, adult vocal cord hemangiomas are extremely rare. A 46-year-old woman was referred to our department for hoarseness, which continued for 18 months. A laryngeal fiberscope revealed a small protuberant tumor resembling a polyp on her right vocal cord, and the narrow-band imaging showed abundant vascularity. Laryngeal microsurgery with a cold instrument under general anesthesia completely resected the tumor on the vocal cord. Histopathologically, the resected tumor consisted of vessels with thick walls and was diagnosed as a cavernous hemangioma of the vocal cord. After the surgery, she has never complained of hoarseness and has had no local recurrence for six months.

Infantile Hemangioma of the Upper Lip: Report of a Rare Case With a Brief Review of Literature

Hamartomas are tumor-like abnormalities typified by the presence of cellular proliferation indigenous to the native site. However, hamartomas maintain growth cessation without the potential for further growth or malignant transformation. Hamartomas are commonly seen in the lungs, kidney, liver, and spleen and rarely occur in the orofacial region. Various hamartomatous oral lesions include hemangiomas, lymphangiomas, tori, exostosis, dens invaginatus, dens evaginatus, odontomas, nevi, and cherubism. Infantile hemangiomas are benign vascular tumors that emerge soon after birth and experience rapid growth within the first year. Oral hemangiomas affect up to 6.4% of infants and are more common on the ventral surface of the tongue, as opposed to oral vascular malformations, which are more prevalent on the lips. It also has a 3:1 female-to-male predominance. Afterward, their growth usually stabilizes and enters a prolonged, incomplete involution phase. Uncomplicated hemangiomas generally exhibit spontaneous resolution, whereas few can leave behind scars and telangiectasias on the external surface of the skin on which it occurs. Thus, lesions located in anatomically sensitive regions necessitate vigilant surveillance and treatment. This paper deals with an asymptomatic swelling of the upper lip in a four-year-old female child but with problems in aesthetics, speech, and feeding. A thorough history, clinical examination, positive diascopy, ultrasonography, and histopathology confirmed the diagnosis of infantile hemangioma.

Outcome after surgical treatment of venous malformations of the hand in childhood

OBJECTIVE

Surgical treatment of venous malformations (VMs) of the hand is challenging. The hand's small functional units, dense innervation, and terminal vasculature can be easily compromised during invasive interventions like surgery or sclerotherapy, leading to an increased risk of functional impairment, cosmetic consequences, and negative psychological effects.

METHODS

We have conducted a retrospective review of all surgically treated patients diagnosed with VMs of the hand between 2000 and 2019 and evaluated their symptoms, diagnostic investigations, complications, and recurrences.

RESULTS

Twenty-nine patients (females, n = 15) with a median age of 9.9 years (range, 0.6-18 years) were included. Eleven patients presented with VMs involving at least one of the fingers. In 16 patients, the palm and/or dorsum of the hand was affected. Two children presented with multifocal lesions. All patients presented with swelling. Preoperative imaging was done in 26 patients and consisted of magnetic resonance imaging in nine patients, ultrasound in eight patients, and both modalities in nine patients. Three patients underwent surgical resection of the lesions without any imaging. Indications for surgery were pain and restriction of function (n = 16), and when lesions were preoperatively evaluated as completely resectable (n = 11). In 17 patients, a complete surgical resection of the VMs was performed, whereas in 12 children, an incomplete resection of VM was deemed due to nerve sheath infiltration. At a median follow-up of 135 months (interquartile range, 136.5 months; range, 36-253 months), recurrence occurred in 11 patients (37.9%) after a median time of 22 months (range, 2-36 months). Eight patients (27.6%) were reoperated because of pain, whereas three patients were treated conservatively. The rate of recurrences did not significantly differ between patients presenting with (n = 7 of 12) or without (n = 4 of 17) local nerve infiltration (P = .119). All surgically treated patients who were diagnosed without preoperative imaging developed a relapse.

CONCLUSIONS

VMs in the region of the hand are difficult to treat, and surgery is associated with a high recurrence rate. Accurate diagnostic imaging and meticulous surgery may contribute to improve the outcome of the patients.

Unique Case of Parathyroid Adenoma With Arteriovenous Malformation

Direct communication between dysmorphic arteries and veins without an interceding capillary segment is known as arteriovenous malformation (AVM). Its etiology is still unknown; however, it is commonly acknowledged that it could be related to trauma or is congenital in origin. Often, AVMs are found in the central nervous system or other sites such as under the skin or in the deep solid organs. They can be encountered as a solitary abnormality or associated with another pathology. If they are large enough, they can deprive the neighboring tissue of oxygen, eventually leading to tissue damage and compressing the surrounding organs, causing potentially more serious consequences. AVM in parathyroid adenoma is an unusual entity in the medical reports and known clinical practice. We herein report a unique case of a 49-year-old female patient who presented with a neck mass and associated symptoms of hyperparathyroidism (HPT) with no history of previous trauma or surgery. The imaging and laboratory tests were consistent with parathyroid neoplasm. Parathyroidectomy was performed and revealed parathyroid adenoma with AVM.

Familial CCM Genes Might Not Be Main Drivers for Pathogenesis of Sporadic CCMs-Genetic Similarity between Cancers and Vascular Malformations

Cerebral cavernous malformations (CCMs) are abnormally dilated intracranial capillaries that form cerebrovascular lesions with a high risk of hemorrhagic stroke. Recently, several somatic "activating" gain-of-function (GOF) point mutations in PIK3CA (phosphatidylinositol-4, 5-bisphosphate 3-kinase catalytic subunit p110α) were discovered as a dominant mutation in the lesions of sporadic forms of cerebral cavernous malformation (sCCM), raising the possibility that CCMs, like other types of vascular malformations, fall in the PIK3CA-related overgrowth spectrum (PROS). However, this possibility has been challenged with different interpretations. In this review, we will continue our efforts to expound the phenomenon of the coexistence of gain-of-function (GOF) point mutations in the PIK3CA gene and loss-of-function (LOF) mutations in CCM genes in the CCM lesions of sCCM and try to delineate the relationship between mutagenic events with CCM lesions in a temporospatial manner. Since GOF PIK3CA point mutations have been well studied in reproductive cancers, especially breast cancer as a driver oncogene, we will perform a comparative meta-analysis for GOF PIK3CA point mutations in an attempt to demonstrate the genetic similarities shared by both cancers and vascular anomalies.

Microvascular proliferation in arteriovenous malformation of the hand worsens during pregnancy: a case report

Arteriovenous malformations (AVMs) are rare congenital disorders characterized by episodes of disproportionate growth that can cause pain and severe bleeding, with microvascular proliferation (MVP) associated with these episodes. Hormonal influences can also worsen the symptoms in patients with AVM.

Case presentation

This case report presents a female patient with congenital vascular malformations of the left hand since birth, whose symptoms worsened during puberty and pregnancy, ultimately leading to amputation of the left hand due to unbearable pain and loss of function. Pathologic analysis revealed substantial MVP activity within the tissues of the AVM, with an expression of receptors for estrogen, growth hormone, and follicle-stimulating hormone in the vessels of the AVM, including MVP areas. Resected materials not related to pregnancy revealed chronic inflammation and fibrosis but hardly any MVP.

Discussion and conclusion

These findings suggest a role for MVP in the progressive growth of AVM during pregnancy, with a potential role for hormonal influences. The case highlights the relationship between AVM symptoms and size during pregnancy and the pathological findings of MVP areas within the AVM with hormone receptor expression on proliferating vessels in resected materials.

Medusa's Wrath: Bleeding Giant Scalp Arteriovenous Malformation in an Adult: A Case Report

BACKGROUND

Scalp arteriovenous malformation (AVM) is a rare congenital disease that may present with massive bleeding. To date, surgical excision remains the definitive management. However, the procedure could lead to intraoperative bleeding due to the tumor's high blood flow and complex vascularity.

CASE REPORT

A 49-year old Filipino male presented with a bleeding giant scalp AVM. Computed tomographic scan and duplex studies showed multiple feeding vessels with turbulent flow arising primarily from the right superficial temporal, right posterior auricular, and occipital vessels. Prior to surgery, the patient underwent transfusion due to preoperative hemoglobin of 6 g/dL. Proximal control of the right external carotid artery was performed through a supine position and left in place to reduce the majority of blood flow to the AVM. The patient was turned to a prone position for surgical planning to achieve maximal skin-sparing dissection prior to excision. First, ligation of bilateral superficial temporal and posterior auricular arteries was performed. Next, excision above the periosteum with segmental ligation of feeding vessels around the AVM was carried out. Reconstruction of the defect was done via scalp advancement flap and split-thickness skin grafting. Intraoperative blood loss was 1.6 L. On the sixth postoperative day, the patient was discharged with 100% graft take.

CONCLUSION

Management of scalp AV malformation is challenging, and despite measures to decrease intraoperative bleeding, blood loss is still high. While preoperative embolization has been reported to decrease the risk of bleeding, this procedure is not currently available in our setting. Our case highlights the complexity of giant scalp AV malformation management in a limited-resource setting. Even in the absence of endovascular intervention, outright surgical excision of AVM can be performed, albeit with higher levels of blood loss.

Conventional Radiology in Deep Seated Facial Hemangioma: A Case Report

Hemangioma is congenital or traumatic in origin, and it is caused due to atypical build-up of the blood vessel. It is a painless benign condition with typical characteristic clinical features. These generally occur in the first three decades of life with no gender predispositions. A plain soft tissue radiograph can demonstrate phleboliths and aid in diagnosing an intramuscular hemangioma. The present report is a rare deep-seated facial hemangioma involving various facial muscles with multiple phleboliths; characteristics clinical and radiological features. A 22-year-old male patient reported a complaint of swelling on the right side of the jaw. Conventional radiography showed the right cheek's soft tissue and multiple round, target-like radiopacities of variable sizes.

A Review of Laser Therapies for the Treatment of Scarring and Vascular Anomalies

Significance: Laser use has become part of the gold standard of treatment as an effective adjuvant in multimodal therapy for pathologic scarring caused by burns, trauma, acne, and surgery, as well as vascular anomalies. Understanding indications and applications for laser therapy is essential for physicians to improve patient outcomes. Recent Advances: Since the 1980s, the medical use of lasers has continuously evolved with improvements in technology. Novel lasers and fractionated technologies are currently being studied in the hopes to improve treatment efficacy, while reducing complications. Recent advancements include acne treatment with novel picosecond lasers, new hypertrophic scar therapies with simultaneous laser and intense pulsed light use, and novel systems such as lasers with intralesional optical fiber delivery devices. In addition, optimizing the timing of laser therapy and its use in multimodal treatments continue to advance the field of photothermolysis. Critical Issues: Selecting the correct laser for a given indication is the fundamental decision when choosing a laser balancing effective treatment with minimal complications. This article covers the principles of laser therapy, the preferred lasers used for the treatment of scarring and vascular anomalies, and discusses the current evidence behind these laser choices. Future Directions: To optimize laser therapy, larger randomized control trials and split scar studies are needed. Continued advancement through better randomized controlled studies will help to improve patient outcomes on a broader scale.

Extensive severe intraorbital arteriovenous malformations: report of a rare laser complication and successful management

Arteriovenous malformations (AVMs) are rare congenital errors of vascular morphogenesis, characterised by abnormal direct communications between arteries and veins, bypassing the normal capillary bed. Apart from the central nervous system, typical locations include the head and neck, and less frequently limbs, trunk or internal organs. AVMs of the head and neck often become clinically evident and symptomatic only in later childhood and are characterised by a history of variable growth, sometimes leading to large, deforming, pulsating masses with a propensity to massive haemorrhage. Therapeutic strategy is based on selective embolisation, surgical excision, or a combination of both. Radical surgical excision of local AVMs is the only effective treatment but it may be mutilating, especially for AVMs of the head and neck. Laser therapy represents a good option to treat the cutaneous aspects of AVMs nevertheless, its efficacy is limited. To the date, pharmacological therapy for AVMs is still on debate due to its controversial outcomes as it seems not as effective as other treatments and usually requires a longer course of application. However, pharmacological therapy could be useful in selected patients and for AVMs nonresponsive to traditional treatment, allowing them to obtain acceptable results without serious complications. This paper reports the case of a serious laser complication of extensive intraorbital AVM successfully treated by local reconstruction and topical pharmacological treatment.

Suprapatellar Fat Pad Impingement due to Vascular Lesion: A Case Report

CASE

We present a fifteen-year-old adolescent boy with anterior knee pain and a palpable tender swelling in the suprapatellar region with painful terminal extension. Imaging was suggestive of a vascular lesion in the suprapatellar fat pad. He underwent arthroscopic debridement and postoperatively regained his terminal extension.

CONCLUSION

Suprapatellar fat pad impingement can rarely be due to vascular lesions or lipomatous tumors affecting the suprapatellar fat pad. If conservative treatment is unsuccessful, surgery can provide good pain relief. The tissue excised should always be sent for histopathological examination.

Study of the changed level of angiogenesis activation factors after endovascular treatment of arteriovenous malformations depending on the type of embolizing material and the radicality of exclusion of the malformation from the blood flow

Objective ‒ тo study changes in angiogenesis factors (VEGF-A, VEGFR-1, Great Endothelin-1) in the blood plasma of patients with arteriovenous malformation (AVM) of different localization before and after endovascular treatment depending on the type of embolizing material used and the results of AVM exclusion from the bloodstream.Materials and methods. The results of treatment in 2019–2022 were analyzed in 27 patients (11 (41.0 %) men and 16 (59.0 %) women) with AVMs of different localization who underwent endovascular treatment. The age of the patients ranged from 11 to 47 years, the average age was (32.8 ± 5.1) years. Patients with AVM were divided into two groups depending on the type of embolizing material: liquid substances (n=12) and emboli and coils (n=15). The control group was formed from 25 healthy people (10 men and 15 women) without AVM, in which the concentration of VEGF-A, VEGFR-1, Great Endothelin-1 in the blood plasma was determined for 3 months. The average age of the control group was (37.4 ± 4.8) years (from 16 to 57 years).Results. It was proved that the concentration of VEGF-A in blood plasma in patients with AVM before endovascular treatment was statistically significantly higher by 4.5 times than in the control group, VEGFR-1 by 3.0 times, Great Endothelin-1 by 2.12 times. Within 5‒7 days after embolization, a sharp increase in the level of angiogenesis induction factors was noted by 2.5–3.0 times compared to the initial indicator and a slow decrease during 3 months. However, with the use of liquid embolizing substances, no increase in VEGFR-1 concentration was registered. A comparison of the level of angiogenesis factors before and after endovascular surgical interventions revealed that the total exclusion of AVMs from the bloodstream contributes to the reduction or normalization of the content of angiogenesis factors, while the partial exclusion of AVMs from the bloodstream leads to an increase in their level due to the preservation of the source of production in the AVM structure.Conclusions. It was established that AVMs remain physiologically active during the life of the organism and undergo vascular remodeling as a result of constant pathological neoangiogenesis. Factors of angiogenesis actively respond to endovascular interventions by changing the expression of VEGF-A, VEGFR-1 and Great Endothelin-1 in the blood plasma, depending on the type of embolizing material and the radicality of AVM exclusion from the bloodstream. This is one of the main reasons for remission or further growth of AVMs and recurrences.

A Rare Case of a Giant Vulval Fibroepithelial Stromal Polyp

BACKGROUND

A fibroepithelial stromal polyp is an uncommon benign pathology of the female genital tract. Rarely, these benign tumors present as a giant lesion and are clinically difficulty to distinguish from other pathologies.

CASE

A 19-year-old female presented with a vulval fibroepithelial stromal polyp measuring ∼8 × 8 × 3 cm that extended from the right labia majora. Present for 2 years, the lesion caused mild discomfort and aesthetic dissatisfaction due to its size but otherwise had no associated symptoms. It was diagnosed using a combination of imaging techniques including ultrasound and magnetic resonance imaging and histological analysis. It was removed surgically and has had no recurrence.

SUMMARY AND CONCLUSION

The consideration of both benign and malignant pathologies is paramount when differentiating vulval masses. Thorough clinical reasoning and appropriate use of imaging modalities and histological analysis are essential.

Prenatal diagnosis and management of a giant intrahepatic arteriovenous malformation-Sonographic findings, clinical implications, and treatment

Prenatal detection of complex giant hepatic arteriovenous malformation requires an examination of the affected fetal hemodynamic situation with emphasis on the affected arterial supply pattern. Early pediatric surgeon presentation is needed, as timely surgical intervention appears to be essential.

Treatment of venous malformations in pediatric population – three- year experience

Venous malformations (VMs) are a type of vascular malformations that result in abnormal development of veins that become extensible over time due to an error in vascular morphogenesis. They usually appear in newborns or in early adulthood as a bluish, soft, swollen and eventually painful skin formation. Treatment includes conservative therapy, sclerotherapy and surgical excision. Aim of the paper is to evaluate the therapeutic effect of scleraotherapy in pediatric patients with venous malformations. Material and methods: In a three-year period, from 2019 to 2021, venous malformation was found in 33 patients aged 4 to 14 years (average age: 8 years). Pain as a symptom occurred in 8 patients. Two patients had lesions measuring up to 5 cm and 5 cm respectively, while in the remaining subjects the lesion was over 5 cm. Ultrasound was performed routinely in all subjects, and MRI in two patients. Conservative treatment was instituted in 13 patients with venous malformations of the extremities, surgical excision with local reconstruction was performed in 11 patients, and sclerotherapy with bleomycin under general anesthesia was performed in 8 patients. Combined treatment was used in one patient that presented with venous malformation of the upper arm that underwent partial sclerotherapy with subsequent operative excision due to a phlebolith. Follow-up examinations revealed regression of the change not only from functional but from aesthetic aspect as well. Conclusion: Sclerotherapy is the established golden standard, first-line treatment for venous malformations. Excellent results were achieved as the reduction of the lesions was below 50% of the initial size. However, the modality of treatment should be individualized to each patient as it can sometimes require a combination of more than one treatment option. Venous malformations are best treated early, but they usually recur over time. Treatment helps relieve symptoms and control the growth of vascular malformations.

Surgical management of vascular tumors and malformations of the head and neck in adults

Vascular tumors and malformations present a diagnostic and therapeutic challenge to many physicians. Because these lesions are rare, few surgeons have enough experience with them other than those practicing in tertiary vascular anomaly treatment centers. Some patients may have been misdiagnosed or mistreated during childhood and present in adult age with either recurrence or with an untreated lesion. Ideally, a multidisciplinary treatment team should be involved to discuss management with the patient including specialists in surgery, interventional radiology, pathology, hematology, genetics, and dermatology. As our understanding of the pathogenesis of these lesions grows, novel therapies are being employed which may decrease the need for surgery. Nevertheless, some lesions need definitive treatment with surgery. Improving understanding of the surgical management of vascular anomalies will improve cosmetic and functional outcomes for patients.

Nd:YAG Laser Treatment of Massive Tongue Venous Malformation: A Case Report

Venous malformations (VM) are slow-flow vascular lesions that result from morphogenesis errors. Composed of dysfunctional veins lacking smooth muscle cells, VMs grow slowly and may initially be managed by observation. Treatment is indicated for lesions that cause functional impairment. One treatment option is laser therapy, which is very effective due to its tissue penetration and relative selectivity. The Nd:YAG laser has been shown to treat small and moderately sized mucosal vascular lesions; in this case, it was applied in a staged approach for treatment of a massive venous malformation of the tongue. A 66-year-old male presented with a venous malformation involving the tongue and lower lip, the lesion estimated to be 10 x 14 x 15 cm in size. The Nd:YAG laser was used in three separate stages to photocoagulate the venous lesion. Follow-up for recurrence is ongoing, but currently shows complete malformation ablation with a 36.2% volume reduction after treatment. The Nd:YAG laser is an effective tool in the treatment of large vascular lesions. Successful laser application in a staged approach for the treatment of a venous malformation of this size and complexity further supports its clinical value. Monitoring for possible recurrence of the venous malformation should be ongoing.

[Jugulotympane paraganglioma associated with polysegmentary congenital hemangioma]

The describes a clinical observation of a combination of jugulotympanic paraganglioma of the left temporal bone with multifocal congenital hemangioma. The interest of the case is that such a combination of pathologies is extremely rare. A comprehensive study and surgical treatment of a patient with this clinical diagnosis was carried out. In the diagnosis, objective otorhinolaryngological studies, otomicroscopy and MSCT of the temporal bones and MRI of the middle ear with contrast were used. Surgical intervention was performed under multicomponent anesthesia with tracheal intubation, transmastoid access. The postoperative management of the patient after surgical treatment is described.

Acetylsalicylic acid suppression of the PI3K pathway as a novel medical therapy for head and neck lymphatic malformations

OBJECTIVES

Head and neck lymphatic malformations (HNLM) are caused by gain-of-function somatic mutations in PIK3CA. Acetylsalicylic acid (ASA/aspirin) is thought to limit growth in PIK3CA-mutated neoplasms through PI3K pathway suppression. We sought to determine if ASA could be beneficial for HNLM.

METHODS

Retrospective case series of patients (0-18 years) offered ASA (3-5 mg/kg/day) for HNLM treatment (2010-2018). Clinical and treatment characteristics, patient-reported symptom improvement, medication tolerance, compliance, and complications were recorded. Treatment response was determined by change in patient/caregiver-reported symptoms, or HNLM size [complete (resolved), partial (decreased), or stable].

RESULTS

Fifty-three patients were offered ASA, 23 (43%) accepted (median age 10 years, IQR 6-14). Compared to patients who declined, patients receiving ASA were more likely to have extensive malformations: ex-utero intrapartum treatment procedure, bilateral malformations, oral cavity location, ≥2 invasive treatments, or tracheotomy (p < 0.05). All patients with tissue available had PIK3CA mutations (13/23). Treatment indications included oral pain/blebs (12, 52%), recurrent pain/swelling (6, 26%), or sudden/persistent swelling (5, 22%). Treatment plan was commonly one 81 mg tablet daily (19, 83%) for 3-12 months (8, 42%). Therapeutic adherence was reported by 18 patients (78%). Symptoms improved in 18 patients [78%; decreased pain (9, 39%) and swelling (8, 35%)]. Treatment resulted in partial (14, 61%) or complete response (4, 17%). Three patients developed oral bleb bleeding, which resolved with medication discontinuation.

CONCLUSION

ASA seems to be a well-tolerated, low-risk medication for HNLM treatment. This pilot study suggests that it often improves symptoms and reduces HNLM size. Further prospective, randomized studies are warranted to comprehensively assess indications, safety, and efficacy.

LEVEL OF EVIDENCE

Level 4.

Pattern and management outcomes of head and neck hemangiomas: a prospective study from Tanzania

Introduction: Hemangiomas arise from the proliferation of endothelial cells surrounding blood-filled cavities. They have a slightly higher female predilection and about 60–70% of them occur in the head and neck region. Various medical and surgical options are available for the treatment of hemangiomas. Aim: To determine the pattern and management outcomes of head and neck hemangiomas in Tanzania. Material and methods: This was a one-year prospective, cross-sectional study that involved all consecutive patients with head and neck hemangiomas treated in Muhimbili National Hospital. A structured questionnaire was used to collect information including age and sex of the patient, chief complaint and, duration, size and site of the lesion. The treatment modalities were surgery and/or intralesional bleomycin injection (IL-Bleo). A standard dose of bleomycin was 0.3 to 0.6 mg/kg per injection not exceeding 15 units per cycle with a maximum of 6 cycles. Frequency distribution and cross-tabulation were performed and association between variables was assessed by the Chi-square test, whereby the p-value was set at p < 0.05. Results: A total of 58 patients were included in the study. The male to female ratio was 1:1.4 and the median age was 6.15 years. Majority (74%) of the patients had infantile hemangioma. The most common presenting complaint of patients/guardians of the patients were facial disfigurement (94.8%), pain (32.8%) and ulceration (22.4%). The most frequently involved sites were the lips (55.2%) followed by the cheeks (37.9%). In patient who were managed surgically, there was a 100% reduction in size of the lesion. Of those who were treated with bleomycin, the percentage reduction in the area of the lesion ranged from 8.33% to 100% with mean of 72.6%. Only 6% of the patient had post IL-Bleo complications. Conclusion: Head and Neck hemangiomas are more common in females and majority are infantile hemangioma. Facial disfigurement is the commonest presenting complication of these lesions, and the lips and the cheeks are mostly affected areas. Intralesional bleomycin is an effective treatment modality which has low complication rates.

Ocular adnexal intramuscular hemangioma arising from the eyelid: case report and literature review

Intramuscular hemangioma (IMH) is rare in the ocular adnexa and is uncommonly found in infants. We describe a 1-month-old female infant with an unremarkable birth history presented with subacute onset of right upper eyelid swelling. Clinical examination revealed a purplish subcutaneous mass over the right upper eyelid causing mechanical ptosis. MRI revealed a well-defined subcutaneous mass, which was hyperintense on the T1 weighted images and showed intense enhancement after administration of intravenous gadolinium. Our working diagnosis was infantile capillary hemangioma, and the patient received two intralesional steroid injections without diminishing the lesion size. The lesion had become static in size and the subsequent MRI 14 years later revealed the same lesion had become hyperintense on the T1 weighted image. An excisional biopsy revealed mixed type IMH. IMH should be considered among young patients with upper eyelid swelling, particularly in those who show a poor response to steroid treatment.

Combined Treatment of High-Flow Scalp Arteriovenous Malformations

INTRODUCTION

Appropriate treatment of scalp arteriovenous malformations (SAVMs) remains largely unclear given the rarity of reported cases. This single-institution case series presents consecutive patients with extracranial SAVMs and long-term follow up.The primary aim of this study was to review treatment decisions, evaluate clinical outcomes, and compare our experience to available literature in order to better understand SAVMs and improve future outcomes.

MATERIALS AND METHODS

A retrospective review of consecutive patients with extracranial SAVMs between January 2015 and December 2019 was performed. Treatment factors of interest included embolization method, embolic agents, and decision to proceed with surgical resection. Relevant clinical outcomes included recurrence rates, cure rates, and complications.

RESULTS

Seven patients were included in the present series. Satisfactory outcomes were ultimately achieved for all 7 patients using embolization with or without combined surgical resection. Embolizations performed in combination with resection were curative in 4 of 4 cases (100%). Embolizations performed without resection were curative in 0 of 4 cases (0%), satisfactory in 2 of 4 cases (50%), and unsatisfactory in 2 of 4 cases (50%).

DISCUSSION

All SAVM patients in this series were treated satisfactorily using embolization with or without operative resection. This study strongly suggests that embolization combined with surgical resection during the same admission yields the best treatment outcomes for SAVMs, specifically demonstrating lower rates of recurrence and embolization-related complications. Decisions on whether or not to proceed with resection should be made by the interventional radiologist, the plastic surgeon, and the patient together.

[Flebolites in the maxillofacial region: a challenge for imaging diagnosis. A review]

Vascular alterations or disorders of the blood and / or lymphatic vessels have their own characteristics, the identification of calcifications being a correct parameter to be able to make a proper diagnosis. The objective of the study was to describe the radiographic characteristics of the phleboliths, and whether they represent a challenge for diagnosis. according to the literature reviewed in the Medline (PubMed) database, Scielo, Google Scholar and some specialized journals. Phleboliths were found to have very particular radiographic characteristics, with concentric radiolucent and radiopaque images that resemble rings. However, not all the presentations are similar, this makes the diagnosis misleading with other calcifications in this region, such as sialoliths where their appearance is usually similar. Furthermore, there is the relationship with vascular anomalies and hemangiomas. finally, the evidence points to very specific characteristics of this lesion, and it is necessary to individualize each case, due to the differences that exist from one patient to another.

Neonatal vascular malformation of parietal bone

Vascular malformations (VaMs) are congenital lesions and are present at birth. They grow commensurately with age. These lesions often affect the soft tissues with intraosseous involvement of the scalp being rare. Here, we discuss a case of intraosseous VaM in a 2-month-old infant which was involving the parietal bone.