Intravascular papillary endothelial hyperplasia on the palm

( Hyun-bin Kwak ),( Eui-sung Jung ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

Intravascular papillary endothelial hyperplasia, also known as Masson’s tumor, is a benign lesion of the skin and subcutaneous tissue consisting of a reactive proliferation of endothelial cells with papillary formations related to a thrombus. It presents as a primary phenomenon within a thrombosed normal blood vessel (usually a vein) or as an incidental finding (secondary form) within other vascular tumors, especially deep-seated cavernous hemangiomas or in lesions such as hemorrhoids. Three cases of Masson’s tumor on the hand have been reported in previous literatures. A 47-year-old woman presented with tender, purple-colored and hyperkeratotic papule with easily bleeding condition. The lesion was lasted over a one year and there was no history of trauma. Physical examination revealed a dark purple colored hard papule approximately 4mm with hyperkeratosis and surrounding erythema. The excisional biopsy specimen showed dilated and thin-walled capillary in the upper dermis underlying an epidermis that had hyperkeratosis with elongation of the rete ridges. In the subset of dilated thin-walled vascular spaces, masses of papillary processes associated with some thrombus were found. The patient was diagnosed as intravascular papillary endothelial hyperplasia. For the removal of the remnant flat vascular patch, Long pulse dye laser therapy was done for 5 times and there was no apparent change.

[P178] Plaque-type blue nevus in a Korean woman

( Hyun-bin Kwak ),( Sang-woo Park ),( Su-kyung Park ),( Soo-han Woo ),( Jin Park ),( Seok-kweon Yun ),( Han-uk Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

Plaque-type blue nevus is a rare variant of blue nevus, the precise prognostic significance of which is unknown. We report the unusual and rare case of an uncommon large, agminated blue nevus of the ``plaque type`` in a 23-year-old Korean female. She presented with a large blue plaque, 2.5 x 6cm in size, on the right lower flank. There were spots of various shades of blue on the plaque. The lesion had developed since birth and became more prominent over the past years. The patient had noticed subcutaneous nodules recently. On physical examination, subcutaneous nodules were found on palpation with no pain. No enlargement of the regional lymph nodules was found. Upon dermoscopic examination, the lesion was typified by areas of homogenous, unstructured blue pigmentation, brownish-blue in the center and blue at the periphery. At the periphery, tan pigmentation was noted. A biopsy was taken from the lesions. Elongated melanocytes in the interstices of the collagen with some melanophages were typical of a common blue nevus. No malignant features were found. A diagnosis of plaque-type blue nevus was made.

[P175] Pigmented poroma on the axilla

( Hyun-bin Kwak ),( Sang-woo Park ),( Su-kyung Park ),( Soo-han Woo ),( Jin Park ),( Seok-kweon Yun ),( Han-uk Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

Eccrine poroma is a relatively uncommon benign adnexal tumor of epithelial cells originating from the terminal ductal portion of the sweat glands that is typically located on palms and soles, although other cutaneous sites can be affected. It is usually nonpigmented, even if a few cases characterized abundant melanin granules and melanocytes have been reported. A 56-year-old woman presented an asymptomatic brown plaque on her axilla which has arisen over the past 10 years. The physical examination showed brown colored plaque 1.0cm in diameter which slightly elevated the skin surface. Dermoscopy revealed some structures resembling seborrheic keratosis. In histopathology, the tumor replaces the epidermis and grows down into the dermis in broad anastomosing bands. There is a sharp demarcation between the keratinocytes of the adjacent epidermis and the monomorphic, slightly smaller cuboidal poroma cells containing dendritic melanocytes and tumor cell melanin deposition. Atypical mitoses, cytologic atypia or other features suggestive of malignant transformation were not seen. A diagnosis of pigmented eccrine poroma was made. Till now, pigmented poroma on the axilla is not reported yet. We show the interesting and rare case of pigmented poroma on the axilla.

[P263] Dermatophytosis of both hands and feet

( Hyun-bin Kwak ),( Sang-woo Park ),( Su-kyung Park ),( Soo-han Woo ),( Jin Park ),( Seok-kweon Yun ),( Han-uk Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

Two feet-one hand syndrome is characterized by bilateral tinea pedis with coexistent unilateral tinea manuum. This syndrome is thought to be well known to dermatologists. Bilateral tinea manuum and bilateral tinea pedis, which may be misdiagnosed as other diseases, can be also observed. We experienced a case of bilateral tinea manuum and bilateral tinea pedis in a patient with diabetes mellitus. A 57-year-old man presented for evaluation of hyperkeratotic lesions on the palms and soles. He felt numbness of the fingertips and intermittent tingling sensation on the soles. Skin examination showed hyperkeratotic lesions on the palms and soles. The palmar surfaces of the fingers and the plantar surfaces of the toes showed scaly lesions. He had a history of type 1 diabetes mellitus of 14 years’ duration. Fasting venous plasma glucose concentration and levels of hemoglobin A1c were 332mg/dL and 7.5%, respectively. Hyphae were detected from the palms, soles, and right 3rd toenail. Trichophyton rubrum was isolated from the specimens. He was treated with oral fluconazole (150mg/week) and topical flutrimazole spray and the lesional skin showed improvement.

Isolated Phthiriasis Palpebrarum in an Elderly Woman: Diagnosis and Treatment Using by Dermoscopy

( Hyun-bin Kwak ),( Sang-woo Park ),( Su-kyung Park ),( Chang-seop Lee ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2019 Annals of Dermatology Vol.31 No.3

Pityriasis Amiantacea: An Epidemiologic Study of 44 Cases in Korean Patients

( Hyun-bin Kwak ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2020 Annals of Dermatology Vol.32 No.1

Isolated phthiriasis palpebrarum in an elderly woman

( Hyun-bin Kwak ),( Eui-sung Jung ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

Public louse infestation caused by a blood-sucking parasite, Pthirus pubis is a worldwide public health problem that affects about 2% of the human population. Although Pthirus pubis typically infests pubic hair, it is also found on terminal hair elsewhere on the body including the axilla, chest, limbs, eyebrows, and eyelashes. Although eyelashes are a common site of Pthirus pubis infestation in children because of the lack of terminal hairs in other body areas, isolated phthiriasis palpebrarum, Pthirus pubis infestation of eyelashes and eyelids without pubic hair involvement, is very rare in adults. A 70-year-old healthy woman was presented with a 2-week history of erythema and pruritus of both eyelids. Physical examination of the eyelids showed erythematous patches and numerous black granules, which seemed to be particles of mascara. Dermoscopy revealed crab lice and ovoid nits on the eyelashes and red-brown feces on the eyelids, which were not discernible by the naked eye. There were no other lesions on the scalp, axilla, and pubis. A diagnosis of isolated phthiriasis palpebrarum was made. She was successfully treated with mechanical removal of the lice and nits with fine forceps under high-magnification videodermoscopy and topical application of 5% permethrin cream. There was no recurrence after 4 weeks of follow-up.

Congenital melanocytic nevus of the nipple in a young male

( Hyun-bin Kwak ),( Eui-sung Jung ),( Sang-woo Park ),( Su-kyung Park ),( Jin Park ),( Seok-kweon Yun ),( Han-uk Kim ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

Congenital melanocytic nevi occur at any site of the body. However, involvement of the nipple is very rare, with only two cases reported. Herein, we report a rare and interesting case of congenital melanocytic nevus of the nipple in a young male. A 22-year-old male presented with an asymptomatic, brown pigmented papules with cobblestone appearance on the right nipple. He and his mother stated that the lesion had been present from birth without significant changes. The breasts had no evidence of any nodularity or gynecomastia. A biopsy of the pigmented lesion on the right nipple revealed a diffuse infiltrate of small monomorphous melanocytes extending into the deep dermis. Melanocytes were also present around smooth muscle cell bundles of the nipple and mammary ducts. On the basis of clinical findings and histopathology, he was diagnosed as congenital melanocytic nevus with an unusual location.

Cutaneous candidiasis of the hands in an infant

( Hyun-bin Kwak ),( Eui-sung Jung ),( Sang-woo Park ),( Su-kyung Park ),( Jin Park ),( Seok-kweon Yun ),( Han-uk Kim ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

The clinical manifestations of infection with Candida species range from local mucous or cutaneous infection to widespread dissemination with multisystem organ failure. Candida species are considered to be normal flora in the gastrointestinal tract. Cutaneous candidiasis in early infancy may appear as diaper dermatosis or intertrigo. Candidiasis on the hand is considered to be a rare condition . We report a case of cutaneous candidiasis seen in a healthy 50-day-old infant. The palms showed erythematous scaly lesions of about 20 days duration. Scales in 10% potassium hydroxide solution revealed spores with pseudohyphae. The specimens were cultured on Sabouraud dextrose agar media and the white yeast-form colonies were observed. Microscopic features prepared with lacto-phenol cotton blue revealed round spores. Candida albicans was identified with internal transcribed spacer region sequencing of PCR amplified gDNA. Skin lesions were improved after 20 days without any antifungal agent.

Dermoscopic study of tinea faciei incognito

( Hyun-bin Kwak ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.2

Background: Tinea incognito is a dermatopyte infection of the skin modified by previous treatments such as prolonged use of topical steroids. The diagnosis of tinea faciei incognito can be delayed or missed because of its atypical appearance without classic ringworm-like pattern. Objectives: We aims to investigate the dermoscopic findings of tinea faciei incognito and its diagnostic usefulness. Methods: We retrospectively evaluated mycologically proven 38 patients with tinea faciei incognito in our institution between July 2014 and July 2018. Results: Mean age was 59.6±20.4 years with female predominance (male:female ratio 1:1.4). Mean duration until confirmation of diagnosis was 3.4 months. Eczema-like conditions (20, 52.6%) were the most common clinical manifestation, followed by psoriasis-like (5, 13.2%) and rosacea-like (4, 10.5%) conditions. Dermoscopic patterns was observed as follows; 1) Skin: scales (81.6%), follicular pustules (44.7%), diffuse erythema and arborizing vessels (42.1%), 2) Facial vellus hairs: empty follicles (57.9%) and translucent hairs (28.9%), 3) Terminal hairs (eyebrow, beard and mustache): broken hairs (39.5%), black dots (34.2%) and empty follicles (23.7%). Conclusion: The distinct dermoscopic patterns, especially in hair follicle in this study could be usuful in clinical diagnosis of tinea faciei incognito.