Multiple Piloleiomyoma Resembling Acne Scarring / 대한피부과학회지

No abstract available.

A Case of Multiple Piloleiomyoma on the Shoulder, which is Mistaken for Keloid

A 30-year-old male presented with multiple tender erythematous nodules, varying in size from 0.5 cm to 2 cm on the right shoulder of the body. He gave a history of pain associated with these lesions, especially on exposure to cold and touch. These lesions showed multi-segmental distribution; each began as a papule, which gradually increased both in size and number to form a nodule. The lesions, which were misdiagnosed as keloids at another hospital, were managed with numerous intralesional steroid injections. This treatment did not improve the symptoms. Based on the history and cutaneous findings during the physical examination, we considered a diagnosis of a benign tumor. Among the lesions, some of the larger ones were completely excised, followed by excision biopsy. We then made a diagnosis of cutaneous leiomyoma, more specifically, piloleiomyoma. The excisional lesions were covered by skin grafts and closed by primary repair.

Multiple Piloleiomyoma Treated with a Suction-Assisted Cartilage Shaver / 대한피부과학회지

Piloleiomyoma is a benign neoplasm arising from the erector pili muscle in the skin. It occurs as linear or dermatomal arrangements of firm, red to brown intradermal nodules, which are fixed to the skin but not to the deeper tissues. Although various treatments have been attempted, they have shown limited success and several complications remain. A 21-year-old male presented with 3-year history of multiple, erythematous, firm 4 mm to 3 cm sized nodules on the chest. The histopathological examination was compatible with piloleiomyoma. The lesions were removed using the dermal shaving method with a suction-assisted cartilage shaver. Each lesion were markedly flattened. This treatment was quicker and caused less subjective pain to the patient compared with those of classic surgical excision. No signs of adverse events or recurrence have been observed.

A Case of Segmental Piloleiomyomatosis on the Face and Neck / 대한피부과학회지

Cutaneous piloleiomyoma is a benign, often painful, smooth muscle tumor, originating from arrector pili muscle. It is usually present as red-brown nodules on the extensor extremities, and it can be multiple in 80% of patients. A 51-year-old man with multiple papules, nodules and plaques on his left cheek, left chin and left submandibular area visited our department. He had noted papules on his left submandibular area for the past 30 years, which had spread to the left cheek and chin. These lesions caused intense pain on exposure to cold air. Histopathological examination showed a neoplastic aggregation composed of irregular interlacing bundles of smooth muscle cells, in the whole dermis. Immunohistochemical staining with smooth muscle actin was positive in tumor cells. The clinical and histopathological findings led to a diagnosis of segmental piloleiomyomatosis. To our knowledge, this case is a first report of extensive segmental piloleiomyomatosis on the face and neck in Korea.

Giant Piloleiomyoma of the Forehead

Cutaneous piloleiomyomas are benign smooth muscle tumors arising from the arrector pili muscles. Piloleiomyomas appear as firm dermal papules of skin color or with a reddish to brown surface, and are commonly located on the extremities. Histologically, these lesions are composed of interlacing bundles of smooth muscle cells in the reticular dermis. Our case presented with an unusually large nodule on the forehead that was accompanied by intermittent pain. Histological analysis was compatible with piloleiomyoma and the lesion showed haphazardly arranged bundles of smooth muscle in the dermis. We describe herein an interesting case of a giant piloleiomyoma occurring on the forehead.

A Case of Piloleiomyoma Arising in a BCG Vaccination Site / 대한피부과학회지

BCG is a live attenuated vaccine derived from Mycobacterium bovis. It can give rise to several cutaneous complications including benign and malignant tumors. There are many reports about tumors arising in vaccination sites, especially those of small pox and BCG vaccinations. Reported tumors are basal cell carcinoma, dermatofibroma, melanoma, pilomatricoma and so on. Piloleiomyoma is a rare soft tissue tumor arising from arrector pili muscles. Clinically, piloleiomyomas appear as firm dermal papules and nodules with skin colored, pink, or reddish-brown surfaces. We experienced a case of piloleiomyma arising in a BCG vaccination site, which has not been reported in previous literature. Although several hypotheses have been propsed, there are no identified causes of leiomyoma. Trauma by the vaccination, persistent inflammation, wound healing process, or antigenic stimulation of the innoculation agent could be the possible causes in this case.

Piloleiomioma simulando morfea en un niño / Piloleiomyoma mimicking morphea in a child

Los piloleiomiomas son tumores cutáneos raros que tienen origen en el músculo erector del pelo. Presentamos el caso de un niño de tres años de edad con una placa indurada en el glúteo izquierdo, asintomática, que estuvo presente desde los tres meses de edad. El examen anatomopatológico mostró un piloleiomioma. Este tumor benigno es raro en niños y suele ser confundido con otras dermatosis. En este artículo revisamos los casos pediátricos publicados y los aspectos genéticos actuales de esta enfermedad. Además, llamamos la atención para el diagnóstico diferencial con otras patologías en la edad pediátrica (AU)

Piloleiomyomas are rare benign smooth muscle tumors arising from the aerector pili muscles in the skin.We describe a three year-old boy presenting with an asymptomatic hard plaque on the left gluteus, which was present since 3 months of age.The anatomopathological examination evidenced a piloleiomyoma.There are few previous reports of piloleiomyomas in children and so they are frequently confounded with other disorders. In this paper, we review the literature on the pediatric cases reported and the current genetics aspects of this disease. Moreover, we make the differential diagnosis with other entities in children (AU)

A Case of Unilateral Multiple Piloleiomyoma, of which the Pain was Ameliorated with Oral Nifedipine / 대한피부과학회지

We report a case of multiple piloleiomyoma in a 50-year-old man. About 30 years ago, multiple red colored firm papules with pain developed on the left lower leg. The skin lesions gradually increased in number and size arranging in a group. Some lesion became more painful after cold exposure. About a few years ago, new lesions developed on the left back and flank abdomen. The histologic findings showed poorly demarcated and were composed of interlacing bundles of smooth muscle fibers with varying amounts of collagen bundles being intermingled. Masson's trichrome and smooth muscle actin stain showed typical leiomyoma, and s-100 stains revealed an increased amount of nerve fibers interlacing within muscle fibers and the surrounding tissue. We diagnosed our case as unilateral multiple piloleiomyoma arising from arrector pilorum muscle. Pain was ameliorated with oral nifedipine alone.