When is a biopsy needle required?

Puncture biopsy is necessary in early, middle and late stages. In the intermediate stage, it is necessary to determine whether the adjacent lymph node tissue contains cancer cells, which is closely related to the extent of surgical resection and the need for future chemoradiotherapy.

Tumor metastasis is generally a station, like taking a bus, starting from the first station to carry a part of the passengers slowly transported to the second station, the third station, and finally to the terminal, the so-called terminal station is the whole body has metastasis. Patients with lung cancer who have metastases to their bones, liver or brain are generally considered advanced.

Needle biopsy is necessary when the primary lesion is not well defined. Metastatic tumors have similar radiographic features of multiple, smooth borders and varying sizes. If you have a lot of these tumors in the lung, the first thing to consider is whether they have metastasized from somewhere else. Clinical peT-CT whole-body scan is commonly used to find the primary lesion, but although PET-CT can find tumors in some other parts of the body, it is not known what kind of tumor. Or they have tumors in two or three places outside of the lung at the same time, but it's not clear which tumor has metastasized to the lung, or multiple tumors have metastasized to the lung, and then a needle biopsy is needed to answer that question.

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