Eccrine porocarcinoma and Bowen's disease arising in a seborrhoeic keratosis

Eccrine Porocarcinoma: A Multicenter Retrospective Study with Review of the Literatures Reported in Korea

BACKGROUND

Eccrine porocarcinoma (EPC) is a rare malignant cutaneous adnexal tumor. Other than several scattered case reports, no comprehensive review on EPC has been conducted in Korea.

OBJECTIVE

To clinicopathologically review all EPC cases from our institutions as well as those reported in Korea.

METHODS

Medical records and histopathological slides of EPC cases in the skin biopsy registries of our institutions were retrospectively reviewed. Additionally, EPC cases reported in Korea before June 2019 were retrieved by searching the PubMed, KoMCI, KoreaMed, and KMbase databases.

RESULTS

Nine EPC cases from our institutions were included in the study. In addition, 27 reports of 28 patients with EPC were reported in Korea. A total of 37 patients with EPC were identified, consisting of 19 males (male:female ratio, 1.06:1; mean age at diagnosis, 65.6 years). The most common site of primary tumor was the head and neck (29.7%). Wide excision was the most common (78.4%) treatment method. Initial metastasis work-up imaging studies were performed in 18 patients (48.6%), and metastasis was confirmed in eight patients (21.6%).

CONCLUSION

EPC is a rare cutaneous carcinoma in Korea. EPC usually affects elderly patients, with no sexual predilection. Due to possible metastasis, careful diagnosis and appropriate metastasis work-ups are warranted in EPC.

Seborrheic keratosis evolution into squamous cell carcinoma: A truly modified sun-related tumor? A case report and review of the literature

The incidence of seborrheic keratosis (SK) generally increases with age and are mostly localized on the trunk, face and neck, especially on sun-exposed areas. The association between SK and skin malignancies appears to be accidental, but in situ transformation occurs more frequently in sun-exposed areas. Histopathological examination of all SK cases should be considered, especially when SK lesions exhibit atypical clinical manifestations, such as ulceration and cresting, as they may herald malignant transformation. In addition, other features associated with malignant transformation include excoriations or hemorrhages identified on the lesion, modification and evolution of the macroscopic characteristics, and the presence of local erythema or pruritus. Immunocompromised patients exhibit an increased risk of malignant transformation, even when radiation is involved.

Porocarcinoma; presentation and management, a meta-analysis of 453 cases

BACKGROUND

porocarcinoma is a rare sort of skin cancer developing from sweat glands. Its clinical course and management are not well understood.

OBJECTIVES

the current meta-analysis is to address the presentation and management of porocarcinoma.

DATA SOURCES

Web of Science, PubMed, MEDLINE on OVID and Google scholar were searched for English-language studies published before December 1, 2016.

RESULTS

The review of literature revealed 453 cases. From which 222 (49%) cases were male and female were 231 (51%). The mean age was 67.57 years. The mean duration of presentation was 5.57 years ranging from 4 days to 60 years of age. The most common site of affection is the head and neck (39.9%) followed by lower extremity (33.9%). Mass and nodule are the most common modes of presentation. Metastasis occurred at presentation in 110 (31%) cases. The most common organ to which porocarcinoma metastizes is the nearby lymph node (57.7%).

CONCLUSIONS

Porocarcinoma is an aggressive skin cancer. Surgery is the main modality of treatment.

SYSTEMATIC REVIEW REGISTRATION NUMBER

reviewregistry233.

Eccrine Porocarcinoma presenting as an abdominal wall mass in a patient with ulcerative colitis-A rare case report

•

Eccrine Porocarcinoma (EPC) is rare. It seldom occurs in the early 20s, or arises in the abdominal wall

•

EPC is easily misdiagnosed due to lack of specific morphological features. Clinical picture usually consists of a painless nodule or papule

•

Definitive diagnosis is achieved by histopathological examination

•

Early definitive surgical excision with wide tumor free margins leads excellent results. Risk of local recurrence is about 20%

•

High index of suspicion for EPC should be maintained in patients with cystic abdominal wall masses, especially in case of ulceration or discharge

Introduction

Eccrine porocarcinoma (EPC) is a rare malignancy of eccrine sweat glands. It is often seen during the sixth to eighth decades of life. We report the first case of eccrine porocarcinoma arising on the abdomen of a 21-year-old patient with ulcerative colitis.

Case presentation

A 21-Year-old female presented to emergency department with a one month history of an enlarging mass over left lower abdomen. Abdominal examination revealed a slightly erythematous, nodular and non-mobile firm mass in left lower quadrant. There was superficial ulceration with slight serous discharge. CT scan of the abdomen and pelvis with contrast revealed a superficial cystic lesion over the anterior abdominal wall, provisionally diagnosed as sebaceous cyst. Incision and drainage were performed and on follow-up, no signs of healing were observed and the patient subsequently underwent surgical excision. Histopathological examination revealed an eccrine porocarcinoma.

Discussion

EPC is a rare and aggressive tumor. It may occur de novo or as a result of malignant transformation of an eccrine poroma. A long period of clinical history is often encountered. It usually occurs on the lower extremities followed by the, trunk, head and neck, and upper extremities. The clinical picture usually consists of a painless nodule or papule. Treatment is wide local excision. No strong evidence exists for adjuvant therapy. The risk of local recurrence is about 20%.

Conclusion

High index of suspicion is required for diagnosis of EPC. Early diagnosis is achieved by histopathological examination and early definitive surgical excision leads to excellent results.

A Case of Recurrent Eccrine Porocarcinoma with Regional Lymph Nodal Metastasis, Arising on a Bowen's Disease Patch

Eccrine carcinomas are very rare, comprising only less than 0.005 % of all cutaneous carcinomas, as reported by Goellner et al. (Cancer 56:1147-1162, 1985). We are reporting a case of recurrent eccrine porocarcinoma (EPC) with regional lymph nodal metastasis, which arose on a Bowen's disease patch. Wide local excision of the lesion with lymph node dissection and excision of the Bowen's disease was done.