Targetoid hemosiderotic hemangioma: Difference between revisions
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{{Infobox medical condition | |||
| name = Targetoid hemosiderotic hemangioma | |||
| synonyms = [[Hobnail hemangioma]] | |||
| field = [[Dermatology]] | |||
| symptoms = [[Red]] to [[purple]] skin lesion with a targetoid appearance | |||
| onset = Typically in [[young adults]] | |||
| duration = [[Chronic]] | |||
| causes = Unknown | |||
| risks = No known risk factors | |||
| diagnosis = [[Clinical diagnosis]], [[biopsy]] | |||
| differential = [[Dermatofibroma]], [[Kaposi's sarcoma]], [[Melanoma]] | |||
| treatment = Usually not required, [[surgical excision]] if necessary | |||
| prognosis = [[Benign]] | |||
| frequency = Rare | |||
}} | |||
'''Targetoid Hemosiderotic Hemangioma''' (THH), also known as [[Hobnail Hemangioma]], is a benign vascular lesion of the skin. It is a rare condition, often misdiagnosed due to its clinical and histological similarities with other skin conditions. | '''Targetoid Hemosiderotic Hemangioma''' (THH), also known as [[Hobnail Hemangioma]], is a benign vascular lesion of the skin. It is a rare condition, often misdiagnosed due to its clinical and histological similarities with other skin conditions. | ||
== Clinical Presentation == | == Clinical Presentation == | ||
THH typically presents as a solitary, red to purple papule or nodule. It is often characterized by a central dark area surrounded by a pale ring, giving it a "targetoid" appearance. The lesions are usually less than 1 cm in diameter and can occur anywhere on the body, but are most commonly found on the limbs. Patients may report a history of rapid growth followed by stability. | THH typically presents as a solitary, red to purple papule or nodule. It is often characterized by a central dark area surrounded by a pale ring, giving it a "targetoid" appearance. The lesions are usually less than 1 cm in diameter and can occur anywhere on the body, but are most commonly found on the limbs. Patients may report a history of rapid growth followed by stability. | ||
== Histopathology == | == Histopathology == | ||
Histologically, THH is characterized by a biphasic pattern with dilated, thin-walled vessels in the superficial dermis and smaller, thick-walled vessels in the deeper dermis. The vessels are lined by endothelial cells with a characteristic "hobnail" appearance. There is often a significant amount of hemosiderin deposition, which gives the lesion its characteristic color. | Histologically, THH is characterized by a biphasic pattern with dilated, thin-walled vessels in the superficial dermis and smaller, thick-walled vessels in the deeper dermis. The vessels are lined by endothelial cells with a characteristic "hobnail" appearance. There is often a significant amount of hemosiderin deposition, which gives the lesion its characteristic color. | ||
== Diagnosis == | == Diagnosis == | ||
Diagnosis of THH is primarily based on histopathological examination. Due to its clinical resemblance to other conditions such as [[Kaposi's sarcoma]], [[melanoma]], and [[pyogenic granuloma]], a biopsy is often necessary to confirm the diagnosis. | Diagnosis of THH is primarily based on histopathological examination. Due to its clinical resemblance to other conditions such as [[Kaposi's sarcoma]], [[melanoma]], and [[pyogenic granuloma]], a biopsy is often necessary to confirm the diagnosis. | ||
== Treatment == | == Treatment == | ||
Treatment of THH is usually not necessary as the lesions are benign and often self-resolving. However, if the lesion is causing discomfort or cosmetic concern, it can be removed by surgical excision or laser therapy. | Treatment of THH is usually not necessary as the lesions are benign and often self-resolving. However, if the lesion is causing discomfort or cosmetic concern, it can be removed by surgical excision or laser therapy. | ||
== Epidemiology == | == Epidemiology == | ||
THH is a rare condition with no known predilection for age, sex, or race. It has been reported in patients of all ages, from infants to the elderly. | THH is a rare condition with no known predilection for age, sex, or race. It has been reported in patients of all ages, from infants to the elderly. | ||
== See Also == | == See Also == | ||
* [[Hemangioma]] | * [[Hemangioma]] | ||
* [[Vascular lesion]] | * [[Vascular lesion]] | ||
* [[Dermatology]] | * [[Dermatology]] | ||
[[Category:Dermatology]] | [[Category:Dermatology]] | ||
[[Category:Skin conditions]] | [[Category:Skin conditions]] | ||
Latest revision as of 05:39, 4 April 2025
| Targetoid hemosiderotic hemangioma | |
|---|---|
| Synonyms | Hobnail hemangioma |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Red to purple skin lesion with a targetoid appearance |
| Complications | N/A |
| Onset | Typically in young adults |
| Duration | Chronic |
| Types | N/A |
| Causes | Unknown |
| Risks | No known risk factors |
| Diagnosis | Clinical diagnosis, biopsy |
| Differential diagnosis | Dermatofibroma, Kaposi's sarcoma, Melanoma |
| Prevention | N/A |
| Treatment | Usually not required, surgical excision if necessary |
| Medication | N/A |
| Prognosis | Benign |
| Frequency | Rare |
| Deaths | N/A |
Targetoid Hemosiderotic Hemangioma (THH), also known as Hobnail Hemangioma, is a benign vascular lesion of the skin. It is a rare condition, often misdiagnosed due to its clinical and histological similarities with other skin conditions.
Clinical Presentation[edit]
THH typically presents as a solitary, red to purple papule or nodule. It is often characterized by a central dark area surrounded by a pale ring, giving it a "targetoid" appearance. The lesions are usually less than 1 cm in diameter and can occur anywhere on the body, but are most commonly found on the limbs. Patients may report a history of rapid growth followed by stability.
Histopathology[edit]
Histologically, THH is characterized by a biphasic pattern with dilated, thin-walled vessels in the superficial dermis and smaller, thick-walled vessels in the deeper dermis. The vessels are lined by endothelial cells with a characteristic "hobnail" appearance. There is often a significant amount of hemosiderin deposition, which gives the lesion its characteristic color.
Diagnosis[edit]
Diagnosis of THH is primarily based on histopathological examination. Due to its clinical resemblance to other conditions such as Kaposi's sarcoma, melanoma, and pyogenic granuloma, a biopsy is often necessary to confirm the diagnosis.
Treatment[edit]
Treatment of THH is usually not necessary as the lesions are benign and often self-resolving. However, if the lesion is causing discomfort or cosmetic concern, it can be removed by surgical excision or laser therapy.
Epidemiology[edit]
THH is a rare condition with no known predilection for age, sex, or race. It has been reported in patients of all ages, from infants to the elderly.
See Also[edit]
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