WordNet

(of exocrine glands) producing a clear aqueous secretion without releasing part of the secreting cell; important in regulating body temperature

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/09/27 22:53:45」(JST)

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Poromas are benign tumors of the distal sweat duct.

A poroma is a benign skin tumor derived from sweat glands. Although the original term poroma was initially used to describe a tumor derived from the ductal epithelium of eccrine sweat glands, the term is used in general reference to tumors derived from ductal portions of both eccrine and apocrine sweat glands. Specific sub-types are primarily defined by location of tumor, and include:^[1]^[2]

eccrine poroma
hidroacanthoma simplex (intraepithelial poroma)
dermal duct tumor (intradermal poroma)
syringoacanthoma
syringofibroadenoma
poroid hidradenoma (disputed as different family)

Eccrine poroma

An eccrine poroma specifically refers to a tumor derived specifically from the most apical portion of eccrine sweat gland (acrosyringium). They are most commonly found on acral distribution (on palms & soles), and most commonly in adults. They are described as <1–2 cm pink/red shiny, exophytic lesions that can be pigmented and are clinically very similar to pyogenic granulomas.^[3] Histologically, the cells as PAS-positive and clearly surrounded by normal keratinocytes. These tumors are surgically excised usually without complication or recurrence, although malignant porocarcinomas can recur and metastasize to local lymph nodes.^[4]

Poroma eccrinale (Hidroacanthoma simplex)
Eccrine clear cell poroma

References

^ Ackerman, AB, ed. (1990). Ackerman’s Histologic Diagnosis of Neoplastic Skin Diseases, a Method by Pattern Analysis 1. Philadelphia, PA: Lea & Febiger. pp. 113–185.
^ Casper, DJ; Glass, LF; Shenefelt, PD (Nov 2011). "An Unusually Large Eccrine Poroma: A Case Report and Review of the Literature". Cutis 88: 227–229.
^ Griffiths, C; Cox, N; Breathnach, S; et al., eds. (2010). "53. Tumours of the Skin Appendages: Eccrine gland tumours". Rook's Textbook of Dermatology - 8th Ed. Chichester, West Sussex: John Wiley & Sons Ltd. ISBN 1-4051-6169-8. |display-editors= suggested (help)
^ Hale, Christopher. "Skin - Nonmelanocytic tumors, Adnexal tumors - eccrine sweat glands: Eccrine poroma". PathologyOutlines.com. Retrieved 30 August 2014.

UpToDate Contents

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1. 皮膚付属器癌 cutaneous adnexal tumors
2. 脂腺母斑および脂腺母斑症候群 nevus sebaceous and nevus sebaceous syndrome
3. 好中球性皮膚症 neutrophilic dermatoses
4. 従来の癌の化学療法による皮膚合併症 cutaneous complications of conventional chemotherapy agents
5. 妊娠中の肌、髪、爪、粘膜 the skin hair nails and mucous membranes during pregnancy

English Journal

Eccrine Poroma of the External Auditory Canal.

Zuniga S1, Khurana JS, Roehm PC.
Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.Otol Neurotol.2015 Sep;36(8):e142-3. doi: 10.1097/MAO.0000000000000770.
PMID 25923123

Subcutaneous porocarcinoma clinically presenting as a soft tissue tumor.

Nakazawa T1, Kondo T1, Sato E2, Motosugi U3, Niu D1, Mochizuki K1, Kawasaki T1, Yamane T1, Katoh R1.
Journal of cutaneous pathology.J Cutan Pathol.2015 Aug 13. doi: 10.1111/cup.12576. [Epub ahead of print]
Porocarcinoma is a rare malignancy with glandular adnexal differentiation. A 38-year-old Japanese man noticed a subcutaneous mass in right inguinal region about 20 years prior to being examined. Radiological examinations demonstrated the mass, 11x10cm in size, was in the subcutaneous fat tissue. Rec
PMID 26268396

Japanese Journal

症例エクリン汗孔腫より生じたエクリン汗孔癌の1例

皮膚科の臨床 59(7), 1165-1169, 2017-06
NAID 40021241683

症例報告黒色調外観とダーモスコピー所見が悪性黒色腫に類似した色素性エクリン汗孔腫の1例

臨床皮膚科 = Japanese journal of clinical dermatology 70(2), 143-148, 2016-02
NAID 40020720417

上唇に発生したPoroid hidradenomaの1例 −本邦における報告例に関する文献的考察−

日本口腔外科学会雑誌 62(2), 73-78, 2016
NAID 130005146552

Related Pictures

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