1
|
Carvalho VM, Nora GR, Collado FU, Xavier Júnior JCC. Rare Areolar Basal Cell Carcinoma Above Invasive Breast Carcinoma: Coincidence or Induction? Am J Dermatopathol 2024:00000372-990000000-00351. [PMID: 38842358 DOI: 10.1097/dad.0000000000002736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Affiliation(s)
- Vinícius Marinho Carvalho
- Pathology Department, Medical School, Salesian Catholic University Center Auxilium (Unisalesiano), Araçatuba, SP, Brazil
| | - Gustavo Resende Nora
- Dermatopathology Department. Araçatuba Pathology Institute, Araçatuba, SP, Brazil
- Santa Casa Hospital, Araçatuba, SP, Brazil
| | | | - José Cândido Caldeira Xavier Júnior
- Pathology Department, Medical School, Salesian Catholic University Center Auxilium (Unisalesiano), Araçatuba, SP, Brazil
- Dermatopathology Department. Araçatuba Pathology Institute, Araçatuba, SP, Brazil
- Santa Casa Hospital, Araçatuba, SP, Brazil
| |
Collapse
|
2
|
Bennett SL, Basko-Plluska JL, Shea CR, Bolotin D. Role of Wnt signaling in dermatofibroma induction phenomenon. J Cutan Pathol 2020; 48:217-220. [PMID: 32767564 DOI: 10.1111/cup.13837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/30/2020] [Accepted: 08/03/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Dermatofibroma (DF) is a common benign skin neoplasm. Induction above DF lesions, including follicular unit induction, is a frequently observed phenomenon. Wnt signaling is known to be critical in hair follicle morphogenesis. Our study assesses the role of Wnt signaling in DF induction by evaluating intracellular localization of β-catenin in various types of DF induction. METHODS Archived tissue collected between 1 October 1980 and 1 October 2013 was stained per protocol using hematoxylin and eosin and anti-β-catenin monoclonal antibody. Specimens were grouped into categories based on the presence or absence and type of induction. All specimens were scored for nuclear β-catenin localization. RESULTS Of 62 specimens, 42 (68%) showed induction while 20 (32%) showed none. Nuclear β-catenin staining was detected in 23 (55%) of the induction and in none of the no-induction specimens (P-value < 0.001). Types of induction included: 15 (24%) follicular induction, 31 (50%) acanthosis, and 4 (6%) sebaceous induction. For follicular induction, 13 (87%) showed positive nuclear β-catenin staining compared to 11 (35%) for acanthosis and 1 (25%) for sebaceous induction (P-value = 0.002). CONCLUSION Our findings support the hypothesis that DFs promote an ectopic activation of Wnt pathway signaling in follicular induction phenomenon.
Collapse
Affiliation(s)
- Sabrina Lichon Bennett
- Department of Medicine, University of Chicago, Section of Dermatology, Chicago, Illinois, USA
| | - Juliana L Basko-Plluska
- Department of Medicine, University of Chicago, Section of Dermatology, Chicago, Illinois, USA
| | - Christopher R Shea
- Department of Medicine, University of Chicago, Section of Dermatology, Chicago, Illinois, USA
| | - Diana Bolotin
- Department of Medicine, University of Chicago, Section of Dermatology, Chicago, Illinois, USA
| |
Collapse
|
3
|
Tran TAN. Primary cutaneous solitary fibrous tumor with entrapped eccrine components. J Cutan Pathol 2020; 47:845-849. [PMID: 32314418 DOI: 10.1111/cup.13717] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/05/2020] [Accepted: 04/15/2020] [Indexed: 12/23/2022]
Abstract
First described in the pleura, solitary fibrous tumor (SFT) was subsequently reported in a variety of organ systems. Compared to other anatomic sites, primary cutaneous and superficial SFTs are relatively rare. Although several histopathologic variants of cutaneous and superficial SFT have been described, a primary cutaneous SFT harboring glandular components has not hitherto been documented in the literature. The current case report describes a spindle cell neoplasm of the right finger in a female patient with characteristic morphologic and immunohistochemical features of a SFT. Unexpectedly, various glandular and ductal components were identified in the SFT. A few hyperplastic lobules of sweat glands demonstrating similar morphology as the intratumoral glandular components and composed of secretory coils displaying mucinous metaplasia and ducts were detected in the attached subcutaneous tissue, suggestive of an inductive or obstructive effect of the SFT on the eccrine units. The intratumoral glands and ducts were judged to represent entrapped benign eccrine components from the attached subcutaneous tissue. Since this variant of SFT with entrapped eccrine components could mimic many biphasic epithelial and stromal tumors, pathologists should be aware of this unusual variant of SFT to avoid potential erroneous diagnosis, particularly mistaken confusion with a biphasic synovial sarcoma.
Collapse
Affiliation(s)
- Tien Anh N Tran
- Department of Pathology, Advent Health Orlando, Orlando, Florida, USA
| |
Collapse
|
4
|
Spindle Cell Predominant Trichodiscoma or Spindle Cell Lipoma With Adnexal Induction? A Study of 25 Cases, Revealing a Subset of Cases With RB1 Heterozygous Deletion in the Spindle Cell Stroma. Am J Dermatopathol 2020; 41:637-643. [PMID: 30908293 DOI: 10.1097/dad.0000000000001358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In our routine and consultative pathology practices, we have noticed that a relatively high proportion of spindle cell predominant trichodiscomas demonstrate a remarkable stromal admixture of adipose tissue, which along with spindle cells, prominent collagen bundles and myxoid change closely resembles spindle cell lipoma (SCL). To clarify their possible relationship to SCL, 25 cases of trichodiscoma and fibrofolliculoma with stromal "lipomatous metaplasia" were collected and examined using immunohistochemical stains [CD34 and retinoblastoma-1 (RB1) protein] and fluorescence in situ hybridization (RB1 deletion). The patients ranged in age from 35 to 81 years (median 64 years). The male to female ratio was almost equal (14:11). All tumors with a known location were situated on the face with a special predilection for the nose. All cases were sporadic, with all patients having a single lesion and showing no clinical features of Birt-Hogg-Dubé syndrome. No case with available follow-up presented with a recurrence or an otherwise aggressive clinical course. Spindle cell stroma was immunohistochemically positive for CD34 in 16 of 20 cases, and 18 of 19 cases showed loss of RB1 staining in lesional spindle cells. Fluorescence in situ hybridization analysis detected RB1 gene heterozygous deletion in 6 of 20 cases. We conclude that despite the SCL-like appearance of the investigated cases, the majority of them supposedly represent genuine spindle cell predominant trichodiscomas with adipose tissue admixture. However, there was a subset of histopathologically indistinguishable cases with proved RB1 deletion, which likely represent SCL with trichodiscoma/fibrofolliculoma-like epithelial/adnexal induction rather than spindle cell predominant variant of trichodiscoma.
Collapse
|
5
|
Genc Y, Akay BN, Okcu Heper A, Rosendahl C, Erdem C. Dermatopathological characteristics of dermatofibromas from dermatoscopic clues. Int J Dermatol 2019; 59:66-75. [DOI: 10.1111/ijd.14559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/11/2019] [Accepted: 05/31/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Yeser Genc
- Department of Dermatology Ankara University School of Medicine Ankara Turkey
| | - Bengu Nisa Akay
- Department of Dermatology Ankara University School of Medicine Ankara Turkey
| | - Aylin Okcu Heper
- Department of Pathology Ankara University School of Medicine Ankara Turkey
| | | | - Cengizhan Erdem
- Department of Dermatology Ankara University School of Medicine Ankara Turkey
| |
Collapse
|
6
|
Sarfo A, Helm K, Flamm A. Cutaneous myxomas and a psammomatous melanotic schwannoma in a patient with Carney complex. J Cutan Pathol 2019; 46:93-96. [DOI: 10.1111/cup.13385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/17/2018] [Accepted: 10/22/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Akua Sarfo
- Department of Dermatology; The Pennsylvania State University College of Medicine; Hershey Pennsylvania
| | - Klaus Helm
- Department of Dermatology; The Pennsylvania State University College of Medicine; Hershey Pennsylvania
| | - Alexandra Flamm
- Department of Dermatology; The Pennsylvania State University College of Medicine; Hershey Pennsylvania
| |
Collapse
|
7
|
Lorier Roy E, Jégou MH, Osio A. [Dermatofibroma with sebaceous induction]. Ann Dermatol Venereol 2018; 145:613-619. [PMID: 30097210 DOI: 10.1016/j.annder.2018.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/15/2017] [Accepted: 04/19/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Histiocytoma or dermatofibroma (DF) is a common benign skin tumour with several clinical and histopathological variants. Sebaceous induction overlying a dermatofibroma is rare and infrequently reported. Using a detailed clinical case, herein the semiological and dermoscopic features of this lesion are described and illustrated, and the differential diagnoses presented. PATIENTS AND METHODS A 52-year-old man consulted for a physical examination, which revealed a firm papular lesion of the upper middle back. The upper part of the nodule was covered by a slightly hyperpigmented surface, with numerous small whitish lobules. Microscopic examination revealed a dermatofibroma with sebaceous induction. DISCUSSION Sebaceous induction overlying a dermatofibroma is not frequent, and it occurs in most cases on or near the shoulder. The typical dermoscopic pattern involves many whitish globules or clumps grouped into clusters. The aetiology is unknown but could stem from a conducive microenvironment in shoulder skin, associated with growth factors secreted by the DF.
Collapse
Affiliation(s)
- E Lorier Roy
- Cabinet de dermatologie, 16, rue Balard, 75015 Paris, France.
| | - M-H Jégou
- Cabinet de dermatologie, 8, rue Jules Ferry, 33290 Blanquefort, France
| | - A Osio
- Cabinet de pathologie cutanée, 56, rue de la Roquette, 75011 Paris, France
| |
Collapse
|
8
|
Muto I, Kuwahara F, Shintani T, Saruta H, Nakama T, Ohata C. Adenodermatofibroma possessing dilated glandular structures with eccrine features: A case study. J Cutan Pathol 2018; 45:623-628. [DOI: 10.1111/cup.13279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/24/2018] [Accepted: 05/08/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Ikko Muto
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| | - Fumi Kuwahara
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| | - Takako Shintani
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| | - Hiroshi Saruta
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| | - Takekuni Nakama
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| | - Chika Ohata
- Department of Dermatology; Kurume University School of Medicine; Kurume Japan
| |
Collapse
|
9
|
Romero-Pérez D, Jegou MH, Lecointre C, Penchet I, Cribier B. Primary cutaneous ganglioneuroma: anatomico-clinical study of 4 cases with focus on Merkel cells. J Cutan Pathol 2018; 45:403-411. [DOI: 10.1111/cup.13144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/08/2018] [Accepted: 03/13/2018] [Indexed: 11/25/2022]
Affiliation(s)
- David Romero-Pérez
- Department of Dermatology; University General Hospital of Alicante; Alicante Spain
| | | | - Claire Lecointre
- Department of Pathology; Regional Hospital Center of Orléans; Orléans France
| | | | - Bernard Cribier
- Department of Dermatopathology and Dermatology, Faculty of Medicine; University Hospital of Strasbourg, University of Strasbourg; Strasbourg France
| |
Collapse
|
10
|
Abstract
CONTEXT - Basal cell carcinoma (BCC) is the most common human malignant neoplasm and is a frequently encountered diagnosis in dermatopathology. Although BCC may be locally destructive, it rarely metastasizes. Many diagnostic entities display morphologic and immunophenotypic overlap with BCC, including nonneoplastic processes, such as follicular induction over dermatofibroma; benign follicular tumors, such as trichoblastoma, trichoepithelioma, or basaloid follicular hamartoma; and malignant tumors, such as sebaceous carcinoma or Merkel cell carcinoma. Thus, misdiagnosis has significant potential to result in overtreatment or undertreatment. OBJECTIVE - To review key features distinguishing BCC from histologic mimics, including current evidence regarding immunohistochemical markers useful for that distinction. DATA SOURCES - Review of pertinent literature on BCC immunohistochemistry and differential diagnosis. CONCLUSIONS - In most cases, BCC can be reliably diagnosed by histopathologic features. Immunohistochemistry may provide useful ancillary data in certain cases. Awareness of potential mimics is critical to avoid misdiagnosis and resulting inappropriate management.
Collapse
Affiliation(s)
- Lauren M Stanoszek
- From the Departments of Pathology (Drs Stanoszek, Wang, and Harms) and Dermatology (Dr Harms), University of Michigan Medical School, Ann Arbor. Drs Stanoszek and Wang contributed equally
| | - Grace Y Wang
- From the Departments of Pathology (Drs Stanoszek, Wang, and Harms) and Dermatology (Dr Harms), University of Michigan Medical School, Ann Arbor. Drs Stanoszek and Wang contributed equally
| | - Paul W Harms
- From the Departments of Pathology (Drs Stanoszek, Wang, and Harms) and Dermatology (Dr Harms), University of Michigan Medical School, Ann Arbor. Drs Stanoszek and Wang contributed equally
| |
Collapse
|
11
|
Clinical, Dermoscopic, and Histopathologic Features of a Dermatofibroma With Sebaceous Induction. ACTAS DERMO-SIFILIOGRAFICAS 2017. [DOI: 10.1016/j.adengl.2017.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
12
|
Iacobelli J, Harvey NT, Wood BA. Sebaceous lesions of the skin. Pathology 2017; 49:688-697. [PMID: 29078997 DOI: 10.1016/j.pathol.2017.08.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 08/08/2017] [Accepted: 08/21/2017] [Indexed: 12/17/2022]
Abstract
Sebaceous differentiation is commonly seen in cutaneous neoplasms, both in the context of lesions showing predominantly sebaceous differentiation (e.g., sebaceous adenoma, sebaceoma and sebaceous carcinoma), or as more focal sebaceous components in neoplasms with other primary lines of differentiation. Sebaceous changes can also be a component of benign cystic lesions or epidermal tumours, and sebaceous hyperplasia is commonly encountered. This review is intended to provide an overview of the cutaneous lesions with sebaceous differentiation, with a particular emphasis on facilitating histological diagnosis of neoplasms. In addition, the role of immunohistochemical studies is outlined, as well as the evaluation of potential cases of Muir-Torre syndrome.
Collapse
Affiliation(s)
- Jean Iacobelli
- Dermatopathology Group, Department of Anatomical Pathology, PathWest, Perth, Australia; School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Nathan Tobias Harvey
- Dermatopathology Group, Department of Anatomical Pathology, PathWest, Perth, Australia; School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Benjamin Andrew Wood
- Dermatopathology Group, Department of Anatomical Pathology, PathWest, Perth, Australia; School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia.
| |
Collapse
|
13
|
Induction of Desmoplastic Trichoepithelioma in a Dermatofibroma. Am J Dermatopathol 2017; 40:924-926. [PMID: 29053493 DOI: 10.1097/dad.0000000000000982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Induction of follicular germinative structures above a dermatofibroma (DF) is a common finding. Rarely, induction of a trichoblastoma in a DF has been observed. Here, we report the case of a desmoplastic trichoepithelioma induced by a DF. The lesion with clinical and histological appearance of a DF situated on the left dorsal foot showed an associated adnexal proliferation that fulfilled histopathological criteria of desmoplastic trichoepithelioma. Immunohistochemistry (Ber-EP4, Bcl-2, CK17, CK20, CK7, EMA, and Ki67) helped to confirm the diagnosis and to exclude possible differential diagnoses.
Collapse
|
14
|
Clinical, Dermoscopic, and Histopathologic Features of a Dermatofibroma With Sebaceous Induction. ACTAS DERMO-SIFILIOGRAFICAS 2017; 108:874-876. [PMID: 28676146 DOI: 10.1016/j.ad.2017.02.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/21/2017] [Accepted: 02/27/2017] [Indexed: 11/22/2022] Open
|
15
|
Toyoshima A, Osada SI, Umebayashi Y, Manabe M. Dermoscopic features of dermatofibroma with overlying sebaceous hyperplasia. J Dermatol 2017; 44:548-549. [PMID: 28256746 DOI: 10.1111/1346-8138.13804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aya Toyoshima
- Department of Dermatology and Plastic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Shin-Ichi Osada
- Department of Dermatology and Plastic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Yoshihiro Umebayashi
- Department of Dermatology and Plastic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Motomu Manabe
- Department of Dermatology and Plastic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| |
Collapse
|
16
|
|
17
|
Molina-Ruiz AM, Bernárdez C, Requena L, Schärer L. Primitive follicular induction in molluscum contagiosum. J Cutan Pathol 2015; 43:12-7. [PMID: 26265178 DOI: 10.1111/cup.12584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/12/2015] [Accepted: 06/28/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Molluscum contagiosum (MC) is the commonest human poxvirus infection. Follicular induction has rarely been observed in the epidermis surrounding lesions of MC. A virus-induced localized proliferation of germinative/stem cells of the folliculosebaceous-apocrine unit has been suggested as the underlying cause, however few reports of this peculiar phenomenon exist in the literature and the mechanisms involved in this proliferation require further study. METHODS We prospectively collected MC cases showing multifocal areas of primitive follicular induction involving the adjacent undersurface epidermis. Immunohistochemical expression of BerEP4, PHLDA1 and cytokeratin 20 (CK20) was evaluated in the basaloid germs surrounding the lesions. For PHLDA1, we used epidermal melanocytes as a positive internal control. For BerEP4, we employed a basal cell carcinoma (BCC) and for CK20, colon as positive external controls. An incubation without the primary antibody functioned as an external negative control. RESULTS All the cases studied showed an intense positive staining of the basaloid buds with BerEP4 and weaker stain for PHLDA1. CK20 showed the presence of scattered Merkel cells within the induced epidermal basaloid proliferations favoring their reactive origin. DISCUSSION The pathogenetic mechanisms behind the development of these microscopic features and the link between follicular induction and poxvirus infection are explored. Awareness of this unusual phenomenon by dermatopathologists will be helpful in avoiding a misdiagnosis of a superficial BCC in such cases. CONCLUSIONS BerEP4 and PHLDA1 were consistently expressed in the areas of primitive follicular induction surrounding lesions of MC. CK 20 stained the Merkel cells present in the basaloid buds. All these findings support the reactive origin of this phenomenon, which we believe is most probably viral-induced.
Collapse
Affiliation(s)
- Ana María Molina-Ruiz
- Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Claudia Bernárdez
- Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Luis Requena
- Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Leo Schärer
- Dermatopathology laboratory, Dermatophathologisches Gemeinschaftslabor, Friedrichshafen, Germany
| |
Collapse
|
18
|
Zeidi M, North JP. Sebaceous induction in dermatofibroma: a common feature of dermatofibromas on the shoulder. J Cutan Pathol 2015; 42:400-5. [PMID: 25727075 DOI: 10.1111/cup.12474] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 01/29/2015] [Accepted: 02/01/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Dermatofibroma (DF) has multiple histopathological variants and overlying acanthosis, hyperkeratosis and hyperpigmentation are often present. We have frequently observed sebaceous induction in DFs on the shoulder and wanted to assess if this is a site-specific finding. METHODS We prospectively collected 100 DFs and assessed for sebaceous induction, the histopathologic pattern of the DF and any associated-epidermal changes. We retrospectively searched for DFs with sebaceous induction to assess the anatomic site of the biopsy. RESULTS In the 100 prospectively collected DFs, 49% occurred on the lower extremities, 39% on the upper extremities, 10% on the trunk and 2% on the head. Sebaceous induction was present in 16 DFs, 81% of which occurred on or near the shoulder. The most common variant was fibrocollagenous DF (64%), including in DFs with sebaceous induction. The retrospective search for DFs with sebaceous induction found 19 cases in which 95% occurred on the shoulder area. Sclerotic pattern DFs were most common in this retrospective cohort (47%), and seborrheic keratosis-like hyperplasia occurred in 100% of these cases. CONCLUSION DFs occurring on the shoulder have a high incidence of sebaceous induction with seborrheic keratosis-like epidermal hyperplasia and a fibrocollagenous or sclerotic pattern.
Collapse
Affiliation(s)
- Majid Zeidi
- Department of Pathology and Dermatology, University of California, San Francisco, CA, USA
| | - Jeffrey P North
- Department of Pathology and Dermatology, University of California, San Francisco, CA, USA
| |
Collapse
|
19
|
Piccolo V, Mascolo M, Russo T, Russo D, Baroni A. Dermatofibroma with seborrheic keratosis-like changes: a dermoscopic challenge. Diagnosis: Dermatofibroma with seborrheic keratosis-like changes. J Am Acad Dermatol 2014; 71:e123-4. [PMID: 25219724 DOI: 10.1016/j.jaad.2014.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 01/29/2014] [Accepted: 02/03/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Vincenzo Piccolo
- Department of Dermatology and Venereology, Second University of Naples, Naples, Italy.
| | - Massimo Mascolo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Teresa Russo
- Department of Dermatology and Venereology, Second University of Naples, Naples, Italy
| | - Daniela Russo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Adone Baroni
- Department of Dermatology and Venereology, Second University of Naples, Naples, Italy
| |
Collapse
|
20
|
Abstract
Alterations in the dermal connective tissue can sometimes induce epidermal changes with adnexal differentiation. Typically associated with dermatofibromas, such changes can also be seen in a wide range of reactive and neoplastic conditions. Scar is sometimes listed as an underlying cause of follicular induction, but this association seems to be poorly recognized and not widely discussed in the literature. In this article, the authors illustrate the spectrum of follicular induction, which may be associated with a dermal scar emphasizing on patterns, which can be mistaken for a basal cell carcinoma.
Collapse
|
21
|
Abstract
The term "induction" has been used to describe epidermal changes overlying a dermatofibroma (DF). Follicular induction is most often associated with DF, but can be observed in other lesions, including focal mucinosis, nevus sebaceous, seborrheic keratosis, wart, neurofibroma, and scars. Dermatofibrosarcoma protuberans (DFSP) is a malignant fibrohistiocytic tumor that may be difficult to distinguish from DF. In contrast to DF, the epidermis overlying DFSP is usually attenuated or ulcerated. Here, we report a case of DFSP exhibiting follicular induction of the overlying epidermis. This epidermal change has been rarely reported in DFSP and may present a diagnostic pitfall in superficially sampled lesions.
Collapse
|
22
|
|
23
|
Idriss MH, Khalil A, Long W, Elston DM. Epidermal panfolliculoma: an adnexal proliferation with advanced follicular differentiation confined to the epidermis. J Cutan Pathol 2013; 40:409-12. [PMID: 23398529 DOI: 10.1111/cup.12088] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/25/2012] [Accepted: 12/31/2012] [Indexed: 11/30/2022]
Abstract
Follicular differentiation can be exhibited by a variety of epidermal lesions. We report an example of panfolliculoma purely confined to the epidermis. The lesion presented as a verrucous plaque on the leg of a 55-year-old man. Histopathologic sections showed an acanthoma with follicular differentiation including areas mimicking the follicular germ, matrix, root sheath and infundibular components.
Collapse
Affiliation(s)
- Munir H Idriss
- Ackerman Academy of Dermatopathology, New York, NY, USA.
| | | | | | | |
Collapse
|
24
|
Spectrum of Cutaneous and Soft Tissue Lesions in Two Carney Complex Patients—Adnexal Induction Versus Authentic Adnexal Neoplasms. Am J Dermatopathol 2012; 34:729-36. [DOI: 10.1097/dad.0b013e31824d1165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
Sidhu HK, Patel RV, Goldenberg G. Dermatology clinics: what's new in dermatopathology: news in nonmelanocytic neoplasia. Dermatol Clin 2012; 30:623-41, vi. [PMID: 23021050 DOI: 10.1016/j.det.2012.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This article reviews the recent dermatopathology literature involving nonmelanocytic neoplasia, with a focus on important work done over the last 5 years. The discussion includes advances in the understanding of Merkel cell carcinoma pathogenesis and prognosis; changes in the seventh edition of the American Joint Committee of Cancer staging manual in reference to staging of squamous cell carcinoma and Merkel cell carcinoma; newly described or rare histopathologic patterns and entities including squamoid eccrine ductal carcinoma, rippled-pattern adnexal neoplasms, onychomatricoma, spindle cell predominant trichodiscoma/neurofollicular hamartoma, and myoepithelioma; and microsatellite instability in sebaceous neoplasms of Muir-Torre syndrome and other tumors.
Collapse
Affiliation(s)
- Harleen K Sidhu
- Department of Pathology, Mount Sinai School of Medicine, One Gustave L Levy Place, New York, NY 10029, USA
| | | | | |
Collapse
|
26
|
P080. Multiple eruptive cellular dermatofibromas. Melanoma Res 2011. [DOI: 10.1097/01.cmr.0000399541.23462.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|