A case of porocarcinoma from pre-existing hidroacanthoma simplex: need of early excision for hidroacanthoma simplex?

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.

Dermatoscopy of the Borst-Jadassohn phenomenon in hidroacanthoma simplex

The Borst-Jadassohn phenomenon is a morphological finding that consists of the presence of well-defined nests of cells located in the spiny stratum of an acanthotic epidermis. One of the neoplasms where this phenomenon is found is hidroacanthoma simplex. This neoplasm is considered the intraepidermal form of the eccrine poroma. Despite its benign nature, malignant transformations are reported. The present article reports a case of hidroacanthoma simplex and discusses the dermoscopy of this phenomenon.

Hidroacanthoma simplex: dermoscopy and cryosurgery treatment

Hidroacanthoma simplex is a rare intraepidermal neoplasia that arises from the acrosyringial portion of the eccrine duct. Malignant transformation of hidroacanthoma simplex is reported in the literature and the treatment is performed with wide excision or Mohs micrographic surgery. We report the first case successfully treated with cryosurgery with a long-term follow up.

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.

Clinical and histological characteristics of poroid neoplasms: a study of 25 cases in Taiwan

BACKGROUND

Eccrine poroma (EP) are relatively common benign eccrine neoplasms. Other poroid neoplasms (PNs), namely hidroacanthoma simplex (HS), dermal duct tumor (DDT), and poroid hidradenoma (PH), are seldom reported.

METHODS

Among 18 653 biopsy specimens received from January 1988 to October 2003, we found 25 PNs (0.134%). We conducted retrospective analysis and obtained clinical and histopathological information.

RESULTS

There were 16 EP, 3 HS, 4 PH, and 2 PH coexisting with either HS or EP. No DDT was found. More than half of PNs presented as red-color neoplasms, but none were diagnosed correctly on clinical grounds alone. The most common preoperative diagnoses were pyogenic granuloma or soft fibromas. Most EPs were located on hair-bearing regions of the limbs (37.5%) and trunk (25%), instead of soles (18.8%) and palms (6.3%). Three HS showed no cuticular cell, but had monomorphic poroid cells. Most EPs (10/16) were composed of both poroid and cuticular cells. All PH were composed of cuticular and poroid cells. Horn cysts were found in three cases (12%). Most PNs (16/25) contained clear cells.

CONCLUSIONS

PNs are sudoriferous tumors that may vary considerably in clinical expression. EP, about 64% (16/25) of PNs in our series, was the most common. PH incidence is probably underestimated in the literature. We found six PHs in 25 PNs. Histopathologically, it is not justified to exclude PN diagnosis by noticing horn cysts. It was uncommon for two or three subtypes of PN to occur in a single lesion.