PMID- 36539950 OWN - NLM STAT- MEDLINE DCOM- 20230504 LR - 20231213 IS - 1346-8138 (Electronic) IS - 0385-2407 (Linking) VI - 50 IP - 5 DP - 2023 May TI - Application of fluorescence in situ hybridization in distinguishing acral melanoma in situ from acral junctional melanocytic nevus on the volar skin in Japanese patients. PG - 637-645 LID - 10.1111/1346-8138.16681 [doi] AB - Four-colored fluorescence in situ hybridization (FISH) is an ancillary diagnostic tool for melanoma. However, most studies that have investigated the usefulness of FISH primarily focused on advanced melanomas. The aim of the current study was to evaluate the effectiveness of FISH in distinguishing acral melanoma (AM) in situ from benign acral junctional nevus (AJN), two types of lesions that are difficult to differentiate via traditional clinical means. The authors investigated the usefulness of FISH in 91 acral melanocytic lesions, including 50 lesions with diagnostic discrepancies between dermoscopic and pathologic approaches or difficulty diagnosing between AM in situ and AJN, on the volar skin of Japanese patients. The authors classified the lesions based on the diagnosis of dermatologists and pathologists into four groups: (I) lesions with a unanimous diagnosis by dermatologists and pathologists as AM in situ or AJN (n = 41); (II) lesions with a unanimous diagnosis by dermatologists only as AM in situ or AJN (n = 21); (III) lesions with a unanimous diagnosis by pathologists only as AM in situ or AJN (n = 15); and (IV) all other lesions (n = 14). The dermatologists diagnosed the lesions by clinical and dermoscopic photographs alone, while the pathologists diagnosed the lesions by microscopy of hematoxylin and eosin-stained slides alone. In group I (AM in situ [n = 20] and AJN [n = 21]), four-colored FISH demonstrated 90% sensitivity and 81% specificity in distinguishing AM in situ from AJN. There was a significant correlation between the FISH results and the unanimous diagnoses by pathologists alone (p = 0.03) in group III. However, FISH results were not significantly correlated with the unanimous diagnoses by dermatologists alone (p = 0.33) in group II. In conclusion, the four-colored FISH probe kit was useful in distinguishing between AM in situ and AJN and may be an ancillary method when pathologists who are not experts of dermatopathology diagnose melanocytic lesions. CI - (c) 2022 Japanese Dermatological Association. FAU - Takai, Sayaka AU - Takai S AUID- ORCID: 0000-0002-0314-7994 AD - Department of Dermatology, Saitama Medical University, Saitama, Japan. AD - Department of Pathology, Saitama Medical University International Medical Center, Saitama, Japan. FAU - Arai, Eiichi AU - Arai E AD - Department of Pathology, Saitama Medical University International Medical Center, Saitama, Japan. FAU - Shojiguchi, Naoko AU - Shojiguchi N AUID- ORCID: 0000-0001-7732-1433 AD - Department of Pathology, Saitama Medical University International Medical Center, Saitama, Japan. FAU - Nakamura, Yasuhiro AU - Nakamura Y AUID- ORCID: 0000-0002-3664-5818 AD - Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan. FAU - Momose, Shuji AU - Momose S AD - Department of Pathology, Saitama Medical University Saitama Medical Center, Saitama, Japan. FAU - Fukuda, Tomoo AU - Fukuda T AD - Department of Dermatology, Saitama Medical University Saitama Medical Center, Saitama, Japan. FAU - Ishizawa, Keisuke AU - Ishizawa K AD - Department of Pathology, Saitama Medical University, Saitama, Japan. FAU - Ogata, Dai AU - Ogata D AD - Department of Dermatology, Saitama Medical University, Saitama, Japan. AD - Department of Dermatologic Oncology, National Cancer Center Hospital, Tokyo, Japan. FAU - Tsunemi, Yuichiro AU - Tsunemi Y AUID- ORCID: 0000-0003-3590-6489 AD - Department of Dermatology, Saitama Medical University, Saitama, Japan. FAU - Nakamura, Koichiro AU - Nakamura K AUID- ORCID: 0000-0002-0367-0312 AD - Department of Dermatology, Saitama Medical University, Saitama, Japan. FAU - Tsuchida, Tetsuya AU - Tsuchida T AD - Department of Dermatology, Saitama Medical University, Saitama, Japan. LA - eng PT - Journal Article DEP - 20221220 PL - England TA - J Dermatol JT - The Journal of dermatology JID - 7600545 SB - IM MH - Humans MH - In Situ Hybridization, Fluorescence MH - East Asian People MH - Dermoscopy/methods MH - *Melanoma/diagnosis/pathology MH - *Skin Neoplasms/diagnosis/pathology MH - *Nevus, Pigmented/diagnosis/pathology MH - Melanoma, Cutaneous Malignant OTO - NOTNLM OT - FISH OT - Japanese volar skin OT - acral junctional nevus OT - acral melanoma in situ OT - acral volar melanocytic lesions OT - fluorescence in situ hybridization OT - melanocytic nevus OT - virtual slides OT - whole-slide digital imaging EDAT- 2022/12/22 06:00 MHDA- 2023/05/04 12:41 CRDT- 2022/12/21 00:32 PHST- 2022/11/25 00:00 [revised] PHST- 2022/08/27 00:00 [received] PHST- 2022/11/29 00:00 [accepted] PHST- 2023/05/04 12:41 [medline] PHST- 2022/12/22 06:00 [pubmed] PHST- 2022/12/21 00:32 [entrez] AID - 10.1111/1346-8138.16681 [doi] PST - ppublish SO - J Dermatol. 2023 May;50(5):637-645. doi: 10.1111/1346-8138.16681. Epub 2022 Dec 20.