Targetoid hemosiderotic hemangioma, also known as a hobnail hemangioma is a skin condition characterized by a central brown or purplish papule that is surrounded by an ecchymotic halo.[1][2] It may appear similar to melanoma. It was first described by Santa Cruz and Aronberg in 1988.[2]
Signs and symptoms
Targetoid hemosiderotic hemangioma manifests as a single, tiny, reddish-violaceous to brown targetoid lesion that can grow centrifugally in the acute phase is encircled by a hemorrhagic halo.[3] The halo may vanish in later phases, leaving just a central papule.[4][5] There have been reports of certain cases without targetoid development.[6] Targetoid hemosiderotic hemangioma typically develops over the trunk and extremities. The majority of these lesions have a diameter of less than 1 cm.[7]
Causes
Although the precise etiology of targetoid hemosiderotic hemangioma is uncertain, trauma has been suggested as one of the primary causes of the targetoid look.[8][9] Trauma may result in the production of microshunts, wherein the capillary pressure fills the lesion's lymph spaces with erythrocytes, hence promoting the formation of aneurysmal microstructures.[10] There would be interstitial hemosiderin deposits, fibrosis, and inflammation if certain efferent lymphatic veins were blocked.[10][11] These tumors may potentially be amplified by hormones.[12]
Diagnosis
Red or reddish-blue lakes are clearly visible on dermoscopy, depending on how much of the dermis is involved.[3] Hemorrhagic crusts can also be observed as black macules.[4]
Depending on the developmental stage at which the lesion was biopsied, histology varies.[13] There is a biphasic pattern in the early stages: in the papillary dermis, the vascular spaces are dilated and slit-like, resembling lymphatic vessels, which are concentrated around sweat glands and frequently form small hemangiomatous nodules, dissecting the collagen bundles. In the deep dermis, the vascular spaces are angulated and slit-like, resembling lymphatic vessels, with solid intraluminal projections and a hobnail appearance.[8][14] There are fibrin thrombi, inflammatory lymphocytic aggregates, and extensive red blood cell extravasation.[5][8][14] Later stages show significant hemosiderin deposition in the stroma, fibrosis, and a collapsed appearance of the arterial lumen.[8][14]
Simple excision is curative and enables for accurate histological diagnosis. These lesions are solely removed for diagnostic or cosmetic purposes because the condition is benign.[3]
^DE, Elder; D, Massi; RA, Scolyer; R, Willemze (2018). "Soft tissue tumours: Hobnail hemangioma". WHO Classification of Skin Tumours. Vol. 11 (4th ed.). Lyon (France): World Health Organization. pp. 347–348. ISBN978-92-832-2440-2.
^ abJames, William D.; Elston, Dirk; Treat, James R.; Rosenbach, Misha A.; Neuhaus, Isaac (2020). "28. Dermal and subcutaneous tumors". Andrews' Diseases of the Skin: Clinical Dermatology (13th ed.). Edinburgh: Elsevier. p. 594. ISBN978-0-323-54753-6.
^ abSahin, M. T.; Demir, M. A.; Gunduz, K.; Ozturkcan, S.; Turel-Ermertcan, A. (2005). "Targetoid haemosiderotic haemangioma: dermoscopic monitoring of three cases and review of the literature". Clinical and Experimental Dermatology. 30 (6). Oxford University Press (OUP): 672–676. doi:10.1111/j.1365-2230.2005.01924.x. ISSN0307-6938. PMID16197386.
^ abAl Dhaybi, Rola; Lam, Christina; Hatami, Afshin; Powell, Julie; McCuaig, Catherine; Kokta, Victor (2012). "Targetoid hemosiderotic hemangiomas (hobnail hemangiomas) are vascular lymphatic malformations: A study of 12 pediatric cases". Journal of the American Academy of Dermatology. 66 (1). Elsevier BV: 116–120. doi:10.1016/j.jaad.2011.05.025. ISSN0190-9622. PMID21798621.
^Carlson, J.Andrew; Daulat, Soume; Goodheart, Herbert P. (1999). "Targetoid hemosiderotic hemangioma— a dynamic vascular tumor: Report of 3 cases with episodic and cyclic changes and comparison with solitary angiokeratomas". Journal of the American Academy of Dermatology. 41 (2). Elsevier BV: 215–224. doi:10.1016/s0190-9622(99)70052-6. ISSN0190-9622. PMID10426892.
^ abcdSanta Cruz, Daniel J.; Aronberg, Jerome (1988). "Targetoid hemosiderotic hemangioma". Journal of the American Academy of Dermatology. 19 (3). Elsevier BV: 550–558. doi:10.1016/s0190-9622(88)70211-x. ISSN0190-9622.
^Christenson, Leslie J.; Stone, Mary Seabury (2001). "Trauma-Induced Simulator of Targetoid Hemosiderotic Hemangioma". The American Journal of Dermatopathology. 23 (3). Ovid Technologies (Wolters Kluwer Health): 221–223. doi:10.1097/00000372-200106000-00010. ISSN0193-1091. PMID11391103.
^Trindade, Felicidade; Kutzner, Heinz; Tellechea, Óscar; Requena, Luis; Colmenero, Isabel (2012). "Hobnail hemangioma reclassified as superficial lymphatic malformation: A study of 52 cases". Journal of the American Academy of Dermatology. 66 (1). Elsevier BV: 112–115. doi:10.1016/j.jaad.2011.05.019. ISSN0190-9622. PMID21821311.
^Ortiz-Rey, JA; González-Ruiz, A; Miguel, P San; Álvarez, C; Iglesias, B; Antón, I (2005-03-31). "Hobnail haemangioma associated with the menstrual cycle". Journal of the European Academy of Dermatology and Venereology. 19 (3). Wiley: 367–369. doi:10.1111/j.1468-3083.2004.01168.x. ISSN0926-9959. PMID15857469.
^Guillou, Louis; Calonje, Eduardo; Speight, Paul; Rosai, Juan; Fletcher, Christopher D.M. (1999). "Hobnail Hemangioma". The American Journal of Surgical Pathology. 23 (1). Ovid Technologies (Wolters Kluwer Health): 97–105. doi:10.1097/00000478-199901000-00011. ISSN0147-5185.
Zaballos, Pedro; Llambrich, Alex; del Pozo, Luis Javier; Landi, Christian; Pizarro, Angel; Vera, Angel; Bañuls, José (2015). "Dermoscopy of Targetoid Hemosiderotic Hemangioma: A Morphological Study of 35 Cases". Dermatology. 231 (4): 339–344. doi:10.1159/000439301. ISSN1018-8665. PMID26458032.