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Descriptive study of sweat dermatitis: A rare dermatoses not so rare in tropics.

Med J Armed Forces India

December 2024

Col AFMS (MR), O/o DGAFMS, A Block, Africa Avenue, New Delhi, India.

Background: Sweat dermatitis is an irritant inflammatory dermatosis commonly encountered in tropics during summers. Profuse sweating triggered by high heat index, friction, clothing, outdoor activities, military training, overcrowding, prolonged working in ill-ventilated places, etc., are responsible or this dermatitis.

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  • Undifferentiated pleomorphic sarcoma (UPS) is a highly aggressive soft tissue cancer with a poor prognosis, often diagnosed only after metastasis has occurred.
  • Eccrine syringofibroadenoma (ESFA) is a rare skin lesion linked to eccrine ducts, with one subtype arising as a reaction to other inflammatory or neoplastic conditions.
  • A case study is presented involving a 70-year-old man who had both UPS and reactive ESFA, highlighted by a specific skin lesion on his palm characterized by atypical cells and distinctive epidermal changes.
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  • Poroid hidradenomas are rare tumors that develop from eccrine sweat glands and typically present as nodules made up of cuticular and poroid cells.
  • They are classified under poroid neoplasms, which also includes other similar tumors like hidroacanthoma simplex and eccrine poroma, and their diagnosis can be complicated due to similarities with other tumors.
  • A case study of a 56-year-old woman with a nodular lesion on her finger confirmed a poroid hidradenoma through histopathological analysis, emphasizing the necessity for careful clinical evaluation and diagnosis for these uncommon dermatological issues.
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  • Poroid neoplasms (PN) are diverse tumors that originate from sweat glands, and their classification and identifying features can be difficult.
  • A study conducted at the Niamey National Hospital from February 2020 to February 2024 found 13 cases of benign poroid neoplasms, mostly classic poromas, with a majority being misdiagnosed as malignant before surgery.
  • The results indicate that these tumors often have apocrine ductal features and tend to occur in younger patients and non-palmoplantar areas, challenging traditional understandings of their characteristics.
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Article Synopsis
  • Reactive "syringomatoid" eccrine proliferations are similar to syringomas but are less extensive, making it hard to differentiate between the two.
  • There is significant overlap in their histological features, suggesting they might exist on a continuum.
  • This text discusses a rare case of syringomatoid hyperplasia linked with calcinosis cutis in a 54-year-old male, noted as the first of its kind in literature.
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