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This is a rare lesion that usuallyt occurs on the lower extremities of children. It is usually solitary and may be painful. It has a variable coloration and may present with a nodule or plaque.


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AGE RANGE-MEDIAN Children or birth
Late-onset eccrine angiomatous hamartoma on the forehead.

Jeong E, Park HJ, Oh ST, Lee JY, Cho BK.

Department of Dermatology, College of Medicine, Catholic University of Korea, St Mary's Hospital, Seoul, South Korea.

Int J Dermatol. 2006 May;45(5):598-9. Abstract quote  

A 71-year-old Korean man presented with a solitary erythematous plaque on his forehead (Fig. 1). It was first noticed by the patient 1 year previously and had slowly increased in size over that time.

Physical examination revealed a slightly elevated, 1.5 cm x 1.5 cm erythematous plaque on the upper midline of the forehead. Sweating was not evoked by physical work or emotional stress. There was no pain or tenderness associated with the lesion. The patient had no history of trauma to the forehead.

Histopathologic examination of the lesion showed increased numbers of eccrine glands, as well as dilated vascular channels in the deep dermis and subcutaneous tissue (Fig. 2). An immunohistochemical study showed that these eccrine glands stained positively for S-100 and carcinoembryonic antigen (CEA), and the vascular channels for the antifactor VIII-related antigens.

These findings are consistent with eccrine angiomatous hamartoma. There was no change in the lesion during the 1-year follow-up period.

Late-onset eccrine angiomatous hamartoma: clinical, histological and imaging findings.

Laeng RH, Heilbrunner J, Itin PH.

Department of Pathology, Kantonsspital Aarau, Switzerland.

Dermatology 2001;203(1):70-4 Abstract quote

Eccrine angiomatous hamartoma (EAH) is an exceedingly rare benign tumor-like lesion prevalent in childhood which may produce pain and marked sweating. Although an aggressive treatment is not generally indicated, surgery may be considered in severe cases.

In this report we present novel morphological findings by immunophenotyping, document the first MRI findings in EAH and emphasize the importance of preoperative imaging of such lesions.





Eccrine angiomatous hamartoma: report of three patients.

Smith C, Montesinos E, Revert A, Ramon D, Molina I, Jorda E.

Servicio de Dermatologia, Hospital Clinico Universitario, Valencia, Spain.

Pediatr Dermatol 1996 Mar-Apr;13(2):139-42 Abstract quote

Eccrine angiomatous hamartoma is a rare, benign entity. The histologic features include proliferation of eccrine sweat glands and angiomatous capillary channels. We report three children who each had a single lesion on a limb.

These lesions were clinically angiomatous, and we obtained the diagnosis by histologic and immunohistochemical studies.

Eccrine angiomatous hamartoma: report of seven cases.

Cebreiro C, Sanchez-Aguilar D, Gomez Centeno P, Fernandez-Redondo V, Toribio J.

Department of Dermatology, General Hospital of Galicia, Faculty of Medicine, Santiago de Compostela, Spain.

Clin Exp Dermatol 1998 Nov;23(6):267-70 Abstract quote

Eccrine angiomatous hamartoma is a rare cutaneous lesion. Histologically it is characterized by the proliferation of eccrine glands, vascular structures and occasionally other elements in the middle and deep dermis; we now report seven further cases of this condition, two with lipomatous involvement and also discuss its nosology.

Eccrine angiomatous hamartoma: report of a case and literature review.

Nakatsui TC, Schloss E, Krol A, Lin AN.

Division of Dermatology and Cutaneous Sciences, University of Alberta, Edmonton.

J Am Acad Dermatol 1999 Jul;41(1):109-11 Abstract quote

Eccrine angiomatous hamartoma is a rare condition characterized histologically by increased numbers of eccrine structures and numerous capillary channels. Patients characteristically have a solitary, congenital nodule that may be painful and that may show hyperhidrosis.

It is important to recognize this condition because it is a benign lesion for which aggressive treatment is not indicated. We report the case of a congenital eccrine angiomatous hamartoma that had a firm nodule studded with blue papules.

Eccrine angiomatous hamartoma.

Pelle MT, Pride HB, Tyler WB.

Departments of Dermatology and Pathology, Geisinger Medical Center.

J Am Acad Dermatol 2002 Sep;47(3):429-35 Abstract quote

Four patients with eccrine angiomatous hamartoma are described. Blue-purple color, enlarging size, location on an extremity, pain, and hypertrichosis were common features and aided differentiation from other vascular anomalies and hamartomas of childhood.

None of our patients experienced lesional hyperhidrosis, and simple excision alleviated pain.


Eccrine angiomatous hamartoma of the finger leading to amputation.

Gabrielsen TO, Elgjo K, Sommerschild H.

Department of Dermatology, National Hospital (Rikshospitalet), Oslo, Norway

Clin Exp Dermatol 1991 Jan;16(1):44-5 Abstract quote

A case of eccrine angiomatous naevus in a 34-year-old pregnant woman is described. The tumour was located on the dorsal aspect of the distal phalanx of the left little finger causing severe pain. Partial resection provided no improvement and finally amputation was necessary.

Histological examination revealed the typical appearance of an eccrine angiomatous hamartoma with a large number of eccrine ducts combined with vascular structures.


Eccrine angiomatous hamartoma: a multiple variant.

Aloi F, Tomasini C, Pippione M.

Department of Dermatology, University of Turin, Italy.

Dermatology 1992;184(3):219-22 Abstract quote

A case of multiple eccrine angiomatous hamartoma present in a boy since birth is reported. Clinically, this condition must be differentiated from other neonatal angiomatoses. Sometimes the clinical findings are nonspecific, whereas histologic examination may exclude angiomatoses with visceral involvement.

In our case the hamartomatous nature of this tumor is documented also by the presence of pilar structures intimately related to the eccrine-angiomatous complex in one of two lesions histologically examined. Therefore, the histologic classification of eccrine angiomatous hamartoma into subgroups seems to be excessive.


Eccrine angiomatous hamartoma: a report of symmetric and painful lesions of the wrists.

Morrell DS, Ghali FE, Stahr BJ, McCauliffe DP.

Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7287, USA.

Pediatr Dermatol 2001 Mar-Apr;18(2):117-9 Abstract quote

Eccrine angiomatous hamartoma (EAH) is a rare, benign cutaneous lesion histologically defined as a proliferation of eccrine glands within a closely associated vascular stroma.

Typically EAH presents as a solitary flesh-colored, hyperhidrotic, painful papule or plaque appearing at birth or during childhood. Only two previously reported cases have been described involving multiple, symmetrically located lesions. The occurrence of knuckle pads in patients with EAH has not been reported.

We present an instance of multiple painful EAH lesions occurring symmetrically on the extensor wrists in a 14-year-old girl with knuckle pads.



Eccrine angiomatous hamartoma: a rare skin lesion with diverse histological features.

Challa VR, Jona J.

Dermatologica 1977;155(4):206-9 Abstract quote

A case of painful eccrine angiomatous hamartoma of the wrist in a 10-year-old girl is presented. It was located in the reticular dermis and contained abnormal tubules resembling eccrine secretory coils and thin vascular channels dispersed in the collagenous tissue of the dermis. Some eccrine ducts showed dilatation.

The noteworthy features of this case were the absence of hyperhidrosis over the lesion, and the presence of focal neural infiltration by the tubular structures. Electron microscopy showed mostly clear cells and occasional dark cells lining the tubular structures.

This case supports the theory of abnormal induction of heterotypic dependency with resultant malformation of adnexal as well as mesenchymal elements.

Congenital eccrine angiomatous hamartoma.

Sanmartin O, Botella R, Alegre V, Martinez A, Aliaga A.

Department of Dermatology, University General Hospital, Valencia, Spain.

Am J Dermatopathol 1992 Apr;14(2):161-4 Abstract quote

A case of congenital eccrine angiomatous hamartoma of the foot in a three-month-old girl is presented. Eccrine angiomatous hamartoma is a benign tumoral lesion that combines the proliferation of multiple benign eccrine structures and angiomatous channels. We review the literature on the subject.

Eccrine angiomatous hamartoma with elements of an arterio-venous malformation: a newly recognized variant.

Chien AJ, Asgari M, Argenyi ZB.

Division of Dermatology, University of Washington, Seatlle, WA,USA.

J Cutan Pathol. 2006 Jun;33(6):433-6. Abstract quote  

We present the case of a 54-year-old man with a brown-red nodule on the hand that had been present since early adulthood.

Histology of the excisional biopsy revealed hyperplasia and proliferation of eccrine, apocrine, lipomatous, and vascular structures.

These findings were most characteristic of the entity known as eccrine angiomatous hamartoma (EAH), an uncommon tumor that may present variable clinical and histological features.

In addition, this particular case exhibited a prominent component of arterio-venous malformation that distinguishes it from other EAHs described in the literature and adds to the spectrum of histologic findings that can be seen with this entity.
Multiple mucinous and lipomatous variant of eccrine angiomatous hamartoma associated with spindle cell hemangioma: a novel collision tumor?

Lee HW, Han SS, Kang J, Lee MW, Choi JH, Moon KC, Koh JK.

Department of Dermatology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea.

J Cutan Pathol. 2006 Apr;33(4):323-6. Abstract quote  

Eccrine angiomatous hamartoma (EAH) is a rare, benign condition characterized histologically by increased numbers of eccrine elements, as well as numerous capillary channels. In most cases, EAH arises as a single lesion; however, multiple variants have been reported.

We report a 35-year-old female patient with multiple, sudoriparous, subcutaneous nodules on the right foot, which showed typical histopathological findings of EAH, and vascular components of the tumor consisted of thin-walled dilated vascular spaces intermixed with spindle cells and some histiocytoid endothelial cells representing spindle cell hemangioma (SCH).

To our knowledge, the co-existence of EAH with SCH is a novel finding and not yet described.

Eccrine angiomatous hamartoma: a lipomatous variant.

Donati P, Amantea A, Balus L.

Laboratory for Cutaneous Histopathology, S. Gallicano Institute, Rome.

J Cutan Pathol 1989 Aug;16(4):227-9 Abstract quote

The eccrine angiomatous hamartoma is a rare cutaneous lesion histologically characterized by the presence in the intradermal lobules of mature eccrine sweat glands and angiomatous capillary channels.

We report a case of eccrine angiomatous hamartoma with unusual lipomatous involvement.

Eccrine angiomatous hamartoma with massive mucin deposition.

Tsunemi Y, Shimazu K, Saeki H, Ihn H, Tamaki K.

Department of Dermatology, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.

Eur J Dermatol. 2005 Jul-Aug;15(4):291-2. Abstract quote  

Eccrine angiomatous hamartoma (EAH) is a rare condition characterized histologically by an increased number of eccrine structures and numerous vascular elements. Although EAH sometimes shows mucinous stroma, the mucin is usually not abundant.

In this report, we described a case of EAH that had massive mucin deposition, especially around the eccrine structures.

Our case and a similar reported one indicate that EAH includes a rare variant with a large amount of mucin as one of the hamartoma components.



Eccrine angiomatous hamartoma (nevus): immunohistochemical findings and review of the literature.

Sulica RL, Kao GF, Sulica VI, Penneys NS.

Division of Dermatology, Georgetown University Medical School, Washington, D.C.

J Cutan Pathol 1994 Feb;21(1):71-5 Abstract quote

Eccrine angiomatous hamartoma (nevus) is a rare form of congenital tumorous malformation with proliferation of eccrine secretory coils and ducts, surrounding capillary angiomatous channels and occasionally other minor elements. To date, there have been only about 24 cases reported in the literature.

We report an additional case with more detailed description of the microscopic findings, including immunohistochemical observations. The patient was a 28-year-old female who presented with painless, flesh- to reddish brown-colored, violaceous or bluish subcutaneous nodules on the extremities and trunk. The tumors did not show sweating following exertion. The histologic features were comparable to the previously reported cases. The hamartomatous eccrine sweat glands and ducts and a few apocrine glands demonstrated qualitatively diminished antigens commonly found in the eccrine sweat apparatuses, such as carcinoembryonic antigen (CEA) and S-100 protein.

The findings of CD34, CD44, human nerve growth factor receptor and Ulex europaeus antigens have not been previously reported. The histologic features suggested a "hamartomatous" growth rather than a true neoplastic process.



Eccrine angiomatous hamartoma.

Calderone DC, Glass LF, Seleznick M, Fenske NA.

Division of Dermatology and Cutaneous Surgery, H. Lee Moffitt Cancer Center and Research Institute, James A. Haley Veterans Administration Hospital, University of South Florida College of Medicine, Tampa 33612.

J Dermatol Surg Oncol 1994 Dec;20(12):837-8 Abstract quote

BACKGROUND. Eccrine angiomatous hamartoma (EAH) is a rare benign lesion that mimics a capillary ("strawberry") hemangioma (CH) in appearance. EAH slowly grows and becomes symptomatic whereas CH typically regresses over time.

OBJECTIVE. To increase awareness of this rare hamartoma and emphasize the need for histopathologic evaluation of similar appearing lesions and thus prompt excision versus observation.

METHODS. Literature review and report of an illustrative case.

RESULTS. Histopathologic confirmation of EAH in a lesion clinically indistinguishable from CH and successful surgical extirpation.

CONCLUSION. EAH is a rare hamartomatous neoplasma clinically similar to CH in appearance. Histopathologic examination of suspected lesions is recommended for delineation as CH generally involutes spontaneously whereas EAH may require surgical excision due to pain and hyperhidrosis.

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Last Updated July 7, 2006

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