Neonate with history of lump in left anterior abdominal wall. Clinical examination showed a lump-like mass with some cutaneous pigmentation.
Case history: Neonate with history of lump in left anterior abdominal wall. Clinical examination showed a lump-like mass with some cutaneous pigmentation.
Figure 1,2 show anaechoic vascular spaces.
Figure 3 power Doppler showed flow in vascular spaces.
Figure 4 haematoma in vascular malformation.
High resolution sonography showed mixed echotexture lesion with vascular spaces with slow flow. Power Doppler showed some flow in vascular spaces. A hematoma was also noted in lump.
Diagnosis: Anterior abdominal wall hemangioma
Hemangioma did not resolve spontaneously and surgical excision was done.
Discussion: Hemangiomas are the most common soft-tissue mass seen in children. Subcutaneous hemangiomas are common benign soft tissue neoplasms that consist of increased blood vessels. These may proliferate rapidly in infancy and may involute later. Some actually consider them to be hamartomas and these may be superficial [capillary or cavernous] or intramuscular [deep] in location or may occur within organs. Hemangiomas can be solitary and sporadic, can be diffuse [known as angiomatosis] or can be a component of various neurocutaneous syndromes such as Von Hippel Lindau and Klippel Trenaunay syndrome.
Ultrasound can be used to distinguish between soft tissue hemangiomas from other vascular malformations and also other masses. In cases of superficial hemangiomas, ultrasound demonstrates a hypoechoic, hyperechoic or mixed echogenicity solid mass usually located within the subcutaneous fat.
The presence of flow within the mass distinguishes it from a non-vascular mass. Once the diagnosis of a vascular mass is made, the differentiation of a hemangioma from other vascular masses can be made if specific criteria are fulfilled. The superficial hemangiomas showed a high number of internal vessels with the feeder vessel usually being identified. These vessels, if arterial, showed a low resistance flow and, if venous, showed a normal venous spectral waveform. A study by Dubois, et al concluded that high vessel density within the mass [> 5 vessels per square cm] and high peak arterial Doppler shift could be used as diagnostic criteria to diagnose hemangiomas.
Most superficial hemangiomas in the infant involute spontaneously, in which case ultrasound offers non-invasive monitoring of these patients; however treatment with flash lamp-pumped dye laser can be offered. In cases of large hemangiomas which may present with consumptive coagualopathy [Kasabach Meritt syndrome], operative measures might have to be considered.
Harpreet Singh, MD
JP Scan private diagnostic center, Khanna, Punjab, India
AI Algorithm Comparable to Radiologists in Differentiating Small Renal Masses on CT
May 14th 2024An emerging deep learning algorithm had a lower AUC and sensitivity than urological radiologists for differentiating between small renal masses on computed tomography (CT) scans but had a 21 percent higher sensitivity rate than non-urological radiologists, according to new research.
Appealing Prior Authorization Denials: Can it be Effective for Emerging Technologies?
May 14th 2024While radiologists and other providers may be discouraged by insurer denials saying the use of a technological advance is “unproven and investigational,” 82 percent of appeals for prior authorization denials were approved in 2021.
Current Insights and Emerging Roles for Contrast-Enhanced Mammography
May 10th 2024In a recent lecture at the 2024 ARRS Annual Meeting, Jordana Phillips, MD, discussed the role of contrast-enhanced mammography in staging breast cancer, evaluating response to neoadjuvant chemotherapy and recalls from screening.