{
  "abstract": "Primary pulmonary enteric adenocarcinoma (PEAC) is a rare subtype of lung adenocarcinoma that resembles metastatic colorectal carcinoma in terms of morphology and immunophenotype. We describe a non-smoking female in her 30s who was referred for complaints of progressive low back pain, weight loss and fatigue. PET-CT revealed a 5.6 cm × 4.1 cm × 4.0 cm left lower-lobe mass in the lung, metabolically active left supraclavicular lymphadenopathy, a segment IV lesion of the liver and extensive bony metastases.A CT-guided biopsy revealed adenocarcinoma with mucin pools, and immunohistochemistry (IHC) showed diffuse positivity for CK7, CK20 and CDX2 and negativity for TTF-1, Napsin A and special AT-rich sequence-binding protein 2 (SATB2). These findings revealed the diagnosis of PEAC.She underwent 6 cycles of cisplatin and pemetrexed chemotherapy with tolerable toxicity and a partial metabolic response on follow-up PET-CT. This case underscores the importance of a multimodal approach to differentiate PEAC from metastatic colorectal cancer and facilitate appropriate treatment.",
  "authors": [
    {
      "affiliations": [
        "Medical Oncology, Mahatma Gandhi Medical College and Research Institute, Puducherry, Pondicherry, India",
        "Medical Oncology, Sri Balaji Vidyapeeth (Deemed to be University), Puducherry, Pondicherry, India"
      ],
      "name": "Karthikeyan Kaliyamurthi"
    },
    {
      "affiliations": [
        "Medical Oncology, Mahatma Gandhi Medical College and Research Institute, Puducherry, Pondicherry, India"
      ],
      "name": "Vishva Babu"
    }
  ],
  "title": "Primary pulmonary enteric adenocarcinoma in a young adult: a diagnostic and therapeutic challenge",
  "uid": "761a0e0f-3c8d-51fd-bd4c-c9c99fa41fba"
}