Publications by authors named "Channy Y Muhn"

Article Synopsis
  • Aging leads to increased prominence of the platysma muscle, causing noticeable neck bands and a less defined jawline.
  • A phase 2 study tested onabotulinumtoxinA in adults with significant platysma prominence, comparing low and high doses against a placebo, with follow-up after 4 months.
  • Results showed that both treatment groups had a significant improvement in appearance, with most side effects being mild and related to the procedure, indicating onabotulinumtoxinA is a well-tolerated and effective treatment for platysma prominence.
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The cheek and nose are common areas for skin cancers. There are multiple approaches to surgical excision and reconstruction, depending on the size of defect, tissue quality, adjacent cosmetic units and hairline. An effective solution to skin defects of the lateral cheek is the bilobed flap.

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Psoriasis is a chronic skin disease that affects millions of people throughout the world. Even though cutaneous signs and symptoms are the most common clinical manifestations, the nails can be involved in up to 50% of cases, and their involvement remains an important yet often overlooked aspect of the disease. There is a broad spectrum of nail dystrophies associated with psoriasis, ranging from the common pitting and loosening of the nail plate to the less frequent discoloration and splinter hemorrhages seen in the nail bed.

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Background: Basal cell carcinoma (BCC) occurring on sun-protected regions is an uncommon phenomenon. BCC of the nipple is an exceedingly rare event.

Method: We review the literature on BCC of the female nipple and herein describe the eighth reported case in the English literature.

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Background: Although traditionally considered a medical subspecialty, dermatology has rapidly evolved over the past two decades to encompass a wide variety of cutaneous surgical procedures.

Objective: The study was carried out to evaluate the status of dermatologic surgery practice and skin cancer treatment in Canada.

Methods: In 2003, 550 practicing Canadian dermatologists were surveyed.

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The objective of this article is to describe allergic contact dermatitis from sodium isopropyl xanthate, potassium amyl xanthate, and carbamates in a geotechnician, to discuss possible cross-reactions, and to report the widespread use of carbamates and mercaptobenzothiazole in mining processes.

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Although the most frequent presentation of herpes zoster involves sensory neurons, motor and autonomic symptomatology is also known to occur in this disease. An unusual symptom of hiccups is described here. Other infrequent manifestations of this common illness, including the Ramsay Hunt syndrome, herpes zoster ophthalmicus, urinary and fecal retention, sexual dysfunction, and zoster sine herpete, are reviewed.

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Background: Patients with leukemia often manifest cutaneous findings, which include nonspecific lesions and specific leukemic infiltrates termed leukemia cutis.

Objective: A case of leukemia cutis involving distal finger pads is reported and literature describing hand involvement of specific leukemic infiltrates is reviewed.

Methods And Results: An 80-year-old woman with a 10-year history of chronic lymphocytic leukemia developed painful symmetric tumors of her distal finger pads.

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