Differential Diagnoses for Cutaneous and Subcutaneous Masses
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Questions and Answers

Which type of inflammation is characterized by a mixture of acute and chronic inflammation?

  • Eosinophilic inflammation
  • Septic inflammation
  • Suppurative inflammation
  • Pyogranulomatous inflammation (correct)

    • Which type of inflammation is associated with an allergic response, such as a spider bite or midge bite?

  • Pyogranulomatous inflammation
  • Septic inflammation
  • Eosinophilic inflammation (correct)
  • Suppurative inflammation

    • What type of inflammation is characterized by the presence of neutrophils?

  • Septic inflammation
  • Eosinophilic inflammation
  • Suppurative inflammation (correct)
  • Pyogranulomatous inflammation

    • Which type of inflammation is associated with chronic inflammation and the presence of macrophages?

    <p>Septic inflammation</p> Signup and view all the answers

    Which type of tumor is characterized by cells that adhere together, forming brickwork structures with grouting in between?

    <p>Trichoepithelioma</p> Signup and view all the answers

    Which type of tumor is associated with basal cells?

    <p>Trophoblastoma</p> Signup and view all the answers

    Which type of tumor is commonly seen in white cats?

    <p>Squamous cell carcinoma</p> Signup and view all the answers

    Which type of tumor is often found in the skin and can be identified cytologically?

    <p>Mast cell tumor</p> Signup and view all the answers

    Which type of tumor is commonly seen in the mammary glands?

    <p>Soft tissue sarcoma</p> Signup and view all the answers

    Which type of tumor is often benign and composed of histiocytes?

    <p>Histiocytoma</p> Signup and view all the answers

    Which type of tumour is characterized by cells with indistinct cell borders and an entwined nature?

    <p>Mesenchymal skin tumour</p> Signup and view all the answers

    Which type of tumour is characterized by large adipocytes with fat-filled cells?

    <p>Lipoma</p> Signup and view all the answers

    Which type of tumour is associated with purple granules in the cytoplasm?

    <p>Mast cell tumour</p> Signup and view all the answers

    Which type of tumour is characterized by cells with eccentric nuclei and perinuclear clear zones?

    <p>Plasmacytoma</p> Signup and view all the answers

    Which type of tumour is characterized by cells with centrally placed nuclei, smooth chromatin, and few nucleoli?

    <p>Lymphoma</p> Signup and view all the answers

    Which type of tumour is commonly found in young dogs and has a fried egg appearance?

    <p>Histiocytoma</p> Signup and view all the answers

    Which type of tumour is commonly associated with high cell harvest and can be transmitted between animals?

    <p>TVT</p> Signup and view all the answers

    Which type of tumour is characterized by cells that appear individually and have a high cell harvest?

    <p>Melanoma</p> Signup and view all the answers

    What are some examples of sebaceous cell tumours?

    <p>Sebaceous cell tumours can include adenoma, carcinoma, and epithelioma.</p> Signup and view all the answers

    What is a common type of tumour found in the anal sac?

    <p>A common type of tumour found in the anal sac is anal sac apocrine adenocarcinoma.</p> Signup and view all the answers

    What is a hepatoid adenoma?

    <p>A hepatoid adenoma is a benign adenoma that resembles liver cells.</p> Signup and view all the answers

    What are some examples of mesenchymal skin tumours?

    <p>Examples of mesenchymal skin tumours include fibroma, fibrosarcoma, lipoma, liposarcoma, and perivascular wall tumours such as haemangiopericytoma and myopericytoma.</p> Signup and view all the answers

    What is a characteristic feature of lipoma?

    <p>Lipoma is characterized by large adipocytes with fat-filled cells.</p> Signup and view all the answers

    What are the advantages of performing cytology - FNA/FNCS for cutaneous and subcutaneous masses?

    <p>Quick Simple Cheap Possible to do in house Helpful in establishing a diagnosis Clinical findings/cytological findings</p> Signup and view all the answers

    When can a definitive diagnosis be obtained through cytology?

    <p>Sometimes, a definitive diagnosis can be obtained through cytology.</p> Signup and view all the answers

    What are some scenarios where further investigation, such as biopsy, may be required despite having a preliminary idea of the diagnosis?

    <p>There might be cases where further investigation, such as biopsy, is required even if a preliminary diagnosis can be made.</p> Signup and view all the answers

    What are some common types of inflammatory lesions associated with cutaneous and subcutaneous masses?

    <p>Some common types of inflammatory lesions include suppurative or acute inflammation (neutrophilic), pyogranulomatous inflammation (a mixture of acute and chronic inflammation), and granulomatous inflammation (macrophagic, chronic inflammation).</p> Signup and view all the answers

    How can we distinguish between different cell types in non-inflammatory cutaneous and subcutaneous masses?

    <p>We can distinguish between epithelial, round, or mesenchymal cell types in non-inflammatory masses.</p> Signup and view all the answers

    What are some examples of epithelial skin tumors?

    <p>Some examples of epithelial skin tumors include trophoblastoma (basal cell tumor), trichoepithelioma (hair follicle tumor), and squamous cell carcinoma.</p> Signup and view all the answers

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