A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma
Collision tumors consisting of melanoma and squamous cell carcinoma are very rare. We present the case of a deceptive hyperkeratotic nodule on the forearm of a 72-year-old woman, which clinically appeared to be a squamous cell carcinoma, keratoacanthoma type. Histological examination surprisingly re...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
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| Series: | Dermatopathology |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2296-3529/8/3/30 |
| _version_ | 1797519715297394688 |
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| author | Matthias Walther Sandra Falkvoll Sebastian Leibl |
| author_facet | Matthias Walther Sandra Falkvoll Sebastian Leibl |
| author_sort | Matthias Walther |
| collection | DOAJ |
| description | Collision tumors consisting of melanoma and squamous cell carcinoma are very rare. We present the case of a deceptive hyperkeratotic nodule on the forearm of a 72-year-old woman, which clinically appeared to be a squamous cell carcinoma, keratoacanthoma type. Histological examination surprisingly revealed a coexisting epithelioid melanoma. Thus, this case report shows the importance of an early histopathological and immunohistochemical workup to prevent unnecessary diagnostic and therapeutic delay with negative effects on prognosis. |
| first_indexed | 2024-03-10T07:46:43Z |
| format | Article |
| id | doaj.art-ae6b1b3c56ce48f2b73d7a2871115b2a |
| institution | Directory Open Access Journal |
| issn | 2296-3529 |
| language | English |
| last_indexed | 2024-03-10T07:46:43Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Dermatopathology |
| spelling | doaj.art-ae6b1b3c56ce48f2b73d7a2871115b2a2023-11-22T12:37:22ZengMDPI AGDermatopathology2296-35292021-07-018325325710.3390/dermatopathology8030030A Wolf in Sheep’s Clothing: Collision of Melanoma and KeratoacanthomaMatthias Walther0Sandra Falkvoll1Sebastian Leibl2Skinmed—Clinic for Dermatology, 5000 Aarau, SwitzerlandSkinmed—Clinic for Dermatology, 5000 Aarau, SwitzerlandSkinpath—Histopathology, 5600 Lenzburg, SwitzerlandCollision tumors consisting of melanoma and squamous cell carcinoma are very rare. We present the case of a deceptive hyperkeratotic nodule on the forearm of a 72-year-old woman, which clinically appeared to be a squamous cell carcinoma, keratoacanthoma type. Histological examination surprisingly revealed a coexisting epithelioid melanoma. Thus, this case report shows the importance of an early histopathological and immunohistochemical workup to prevent unnecessary diagnostic and therapeutic delay with negative effects on prognosis.https://www.mdpi.com/2296-3529/8/3/30melanomasquamous cell carcinomacollision tumoroncologydermatopathology |
| spellingShingle | Matthias Walther Sandra Falkvoll Sebastian Leibl A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma Dermatopathology melanoma squamous cell carcinoma collision tumor oncology dermatopathology |
| title | A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma |
| title_full | A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma |
| title_fullStr | A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma |
| title_full_unstemmed | A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma |
| title_short | A Wolf in Sheep’s Clothing: Collision of Melanoma and Keratoacanthoma |
| title_sort | wolf in sheep s clothing collision of melanoma and keratoacanthoma |
| topic | melanoma squamous cell carcinoma collision tumor oncology dermatopathology |
| url | https://www.mdpi.com/2296-3529/8/3/30 |
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