Bintanjoyo, Lunardi
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Journal : Berkala Ilmu Kesehatan Kulit dan Kelamin

Application of Picosecond Laser in Dermatology Bintanjoyo, Lunardi; Indramaya, Diah Mira
Berkala Ilmu Kesehatan Kulit dan Kelamin Vol. 35 No. 2 (2023): AUGUST
Publisher : Faculty of Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/bikk.V35.2.2023.158-162

Abstract

ABSTRACT Background: Lasers are one of the most important treatment modalities in dermatology. Lasers interact with chromophores through several mechanisms that depend on fluence and pulse durations. Early lasers worked by photothermal interaction with pulse durations of 1 microsecond to 1 second. A picosecond laser is developed to confine photothermal effects and produce photomechanical effects and plasma induction. Purpose: To understand the mechanism of action and application of picosecond lasers for dermatological disorders. Review: Non-fractional picosecond lasers work by photomechanical interaction. Photomechanical interaction happens when pulse duration is less than inertial confinement time, causing fractures of chromophores with lower energy, or "cold ablation”. Fractional picosecond lasers work by laser-induced optical breakdown (LIOB). In LIOB, accelerated seed electrons cause an electron avalanche that produce a collection of free electrons called plasma, which ablates tissues. LIOB in the skin is always followed by photodisruption. In LIOB, vacuoles and debris were eliminated transdermally and dermal collagen and elastin increased. Picosecond laser may be applied in disorders requiring destruction of chromophores and for collagen and elastin disorders. It is currently the first-line treatment for tattoo removal (Nevus of Ota and Acquired Bilateral Nevus of Ota-like macules, or ABNOM). It has good efficacy and safety for solar lentigines, freckles, and cafe-au-lait macules (CALM). It is an additional treatment for moderate to severe melasma and hypertrophic scars, in combination with other treatments. The fractional picosecond laser showed moderate improvement and low risk of postinflammatory hyperpigmentation (PIH) for atrophic acne scars and produced improvement in striae alba.
A Retrospective Study of Demographic, Clinical, and Histopathological Profiles of Cutaneous Tumors Bintanjoyo, Lunardi; Hidayati, Afif Nurul; Cita Rosita Sigit Prakoeswa; Murtiastutik, Dwi; Bagus Haryo Kusumaputra; Listiawan, Muhammad Yulianto; Irmadita Citrashanty; Maylita Sari
Berkala Ilmu Kesehatan Kulit dan Kelamin Vol. 34 No. 3 (2022): DECEMBER
Publisher : Faculty of Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/bikk.V34.3.2022.149-155

Abstract

Background: In 2007, skin cancers were third most common malignancies in Indonesia. However, profile of cutaneous tumors in our institution has not been studied. Purpose: To evaluate profile of cutaneous tumors in Dermatology and Venerology Outpatient Clinic, Dr. Soetomo General Hospital, Surabaya, Indonesia. Methods: This is a descriptive retrospective study. Inclusion criteria was new cutaneous tumor patients. Exclusion criteria was incomplete data. Medical record and  photograph database from 2019-2020 were assessed for demography, clinical features, histopathological examination and final diagnosis. Results: There were 379 (5,5%) cutaneous tumors among 6896 new patients at Dermatology and Venereology Outpatient Clinic. Overall, there were more female patients (53.7%) and age group of 0-45 years old (70.4%). Cutaneous tumors more commonly presented as papular (50.4%), multiple (56.5%), nonpigmented (58.3%), asymptomatic lesions (62.5%), with time from onset 0-24 months (66.2%) and location on head and face (61.2%). Benign cutaneous tumors showed similar findings. Malignant cutaneous tumors showed differences including predominantly male sex, age above 45 years old, nodular, solitary, pigmented and easily bleeding lesions. Malignant tumors were less common (6.9%). Most common malignant tumor was BCC. Most common benign and overall cutaneous tumor was seborrheic keratosis. Conclusion: Cutaneous  tumors presented across gender and ages, showing heterogenous clinical manifestations. Malignant and benign cutaneous tumors showed similarity on time from onset and location of lesions. However, differences were seen in demographic profiles and majority of clinical features. BCC was the most common malignant cutaneous tumors, while seborrheic keratosis was the most common benign and overall cutaneous tumors.