Posted by James
INTRODUCTION
Steatocystoma simplex, first described as a distinct entity by Brownstein in 1982, is an extremely rare benign adnexal tumor. The individual lesion of steatocystoma simplex is usually identical with that of steatocystoma multiplex, both clinically and histologically, but is characterized by solitary, non- heritable growth in adulthood. Steatocystoma simplex occurs predominantly on the face, but the incidence of steatocystoma simplex on the scalp is extremely low. Only three cases of steatocystoma simplex on the scalp have been reported worldwide. Read the rest of this entry »
Posted by James
Muscle herniation is defined as a protrusion of a portion of a muscle through a defect of the muscle fascia. The problem is mainly cosmetic, but the disorder may cause spontaneous pain, cramps or local tenderness. Muscle herniation is a relatively common complaint among athletes and it has been frequently reported in the orthopedic surgery literature. Most dermatologists are unfamiliar with this condition, and they are likely to consider it as a peculiar kind of tumor. For the case presented herein, the provisional diagnosis was angiolipomatosis, and an unnecessary skin biopsy was performed.
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Posted by James
A 21-year-old male Korean soldier was referred to our hospital for an evaluation of painful multiple nodules that were on his lower legs. The nodules were seen by the patient six months before the evaluation, and the patient denied any history of local trauma. He complained of the presence and accentuation of the nodules whenever he flexed his legs or when he engaged in any form of physical exercise. The physical examination revealed multiple skin-colored, round, soft, subcutaneous nodules at the anterior-lateral margin of the mid-tibiae of both lower legs. Angiolipomatosis was suspected clinically. Incisional biopsy was performed, but it revealed no specific findings. The subsequent magnetic resonance imaging (MRI) failed to document any significant change.
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Posted by James
INTRODUCTION
Muscle herniation is not a new malady, but it has received little attention in the dermatology literature. Anterior tibialis muscle herniation is the most common muscle herniation, and this usually occurs in people whose occupations bring about a great strain on their legs, such as athletes and soldiers. With the public’s current increased interest in fitness and physical conditioning, dermatologists are most likely to encounter this disorder. Knowledge for making the correct diagnosis of this disorder is indispensable for its proper management and/or making the surgical referral. Read the rest of this entry »
Posted by James
PA is a common skin disorder usually seen in children. PA often starts as a pink patch with an elevated border varying 0.5 to 5 cm in diameter. After several weeks, the patch fades, leaving a paler spot covered by a powdery white scale. This spot will progress to a smooth hypopigmented macule that persists for about 1 year. The lesions are frequently present on the face, arms, and shoulders. Most patients are children between 6 and 16 years of age. Boys are thought to be affected more frequently. There are two uncommon variants, a pigmenting and an extensive PA. Pigmenting PA is a variant that may be associated with superficial dermatophyte infection. Extensive PA is an entity characterized by typical PA lesions distributed in a generalized fashion, and seen more commonly in adults. Extensive PA is not preceded by erythema. The lesions tend to be less scaly, more persistent, and completely asymptomatic. In addition, they are more generalized, more symmetrical, and more frequently seen over the trunk and less so over the face. In our patient, the lesions were not preceded by erythema and not scaly, completely asymptomatic, and generalized.
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Posted by James
A 4-year-old boy presented with multiple hypo- pigmented patches over his whole body (Fig. 1). 18 months ago, they started as small hypopigmented macules over the chest and gradually increased in number and size and spread to the entire body. The lesions were asymptomatic and were accentuated with sun exposure. There was no fluorescence under Wood’s light. On physical examination, the lesions were symmetrically distributed over the whole body and consisted of large hypopigmented patches with indistinct borders. Laboratory examinations, including chest PA, CBC, LFT, and UA were within normal limits. Potassium hydroxide (KOH) mount from a hypopigmented lesion was negative. The boy had a history of xesosis for 2 years but no family history of extensive pityriasis alba or atopic dermatitis.
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Posted by James
INTRODUCTION
Pityriasis alba (PA) is a common disease, usually seen in children. The lesions are frequently limited to the face, but the neck, arms, and shoulders can also be involved. Initially the typical lesion consists of an irregular, round or oval, pink patch, sometimes with an elevated, and slightly erythematous border, varying in size from a few millimeters to a few centimeters. After a few weeks, the erythema usually fades, leaving a whitish macule covered by fine scales. Atypical forms of PA are the extensive and pigmenting types. Read the rest of this entry »