Capillary<unk>  Strawberry naevus, H&E stain The majority of<unk> s can be diagnosed by history and physical examination. In rare cases, imaging (ultrasound with Doppler, magnetic resonance imaging), and/or cytology or histopathology are needed to confirm the diagnosis.<unk> s are usually absent at birth or a small area of pallor, telangiectasias, or duskiness may be seen. A fully formed mass at birth usually indicates a diagnosis other than<unk> . Superficial<unk> s in the upper dermis have a bright-red strawberry color, whereas those in the deep dermis and subcutis, deep<unk> s, may appear blue and be firm or rubbery on palpation. Mixed<unk> s can have both features. A minimally proliferative<unk>  is an uncommon type that presents with fine macular telangiectasias with an occasional bright-red, papular, proliferative component. Minimally proliferative<unk> s are more common in the lower body. A precise history of the growth characteristics of the<unk>  can be very helpful in making the diagnosis. In the first 4 to 8 weeks of life,<unk> s grow rapidly with primarily volumetric rather than radial growth. This is usually followed by a period of slower growth that can last 6–9 months, with 80% of the growth completed by 3 months. Finally,<unk> s involute over a period of years. The exceptions to these growth characteristics include minimally proliferative His, which do not substantially proliferate and large, deep<unk> s in which noticeable growth starts later and lasts longer. If the diagnosis is not clear based on physical examination and growth history (most often in deep<unk> s with little cutaneous involvement), then either imaging or histopathology can help confirm the diagnosis. On Doppler ultrasound, an<unk>  in the proliferative phase appears as a high-flow, soft-tissue mass usually without direct arteriovenous shunting. On MRI,<unk> s show a well-circumscribed lesion with intermediate and increased signal intensity on T1- and T2-weighted sequences, respectively, and strong enhancement after gadolinium injections, with fast-flow vessels. Tissue for diagnosis can be obtained via fine-needle aspiration, skin biopsy, or excisional biopsy. Under the microscope,<unk> s are unencapsulated aggregates of closely packed, thin-walled capillaries, usually with endothelial lining. Blood-filled vessels are separated by scant connective tissue. Their lumina may be thrombosed and organized. Hemosiderin pigment deposition due to vessel rupture may be observed. The GLUT-1 histochemical marker can be helpful in distinguishing<unk> s from other items on the differential diagnosis, such as vascular malformations. Liver<unk> s in the liver are found in 16% of all liver<unk> s. Its sizes are usually less than 1 to 2 cm in diameter. It may show a "flash-filling" phenomenon in which there is the fast enhancement of the contrast material in the lesion instead of slow, centripetal, nodular filling of the lesions in usual<unk> s. On CT and MRI, it shows rapid filling during arterial phase, with contrast retention in venous and delayed phases.
Infantile hemangioma
Chorangioma
Lymphohemangioma
Spider angioma
Boomerang dysplasia
Cherry angioma
Tufted angioma
Angiokeratoma