Could coughing up blood-stained sputum be laryngeal cancer?

Written by Yuan Qing
Pulmonology
Updated on May 05, 2025
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Coughing up phlegm with blood does not necessarily indicate throat cancer. In fact, coughing up phlegm with blood refers to the presence of blood in the phlegm, which should not be confused with coughing up blood. There are many reasons for blood in the phlegm, and the first step is to rule out whether the blood is coming from the nose or the mouth. The nose is connected to the throat through the pharynx. If there is bleeding in the nose, it can also enter the pharyngeal area. Therefore, when blood is observed in the phlegm, it might be mistakenly believed to come from the lower respiratory tract. Additionally, bleeding from the oral cavity or teeth can also mix with the phlegm. After ruling out these two sources, the blood might originate from the lower respiratory tract. The common reasons for blood from the lower respiratory tract include vascular dilation, tuberculosis, and bronchial lung cancer. These conditions require medical examination to confirm. However, it is impossible to diagnose based on symptoms alone. But at least, coughing up phlegm with blood should not be immediately attributed to lung cancer, as there are many diseases that can cause this symptom.

Other Voices

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Written by Yan Chun
Oncology
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Stage II throat cancer is the situation.

The so-called Stage II laryngeal cancer refers to the degree of differentiation of cancer cells, classified as moderately malignant. This type of differentiated cancer cells has a tumor growth rate that is between Stage I and Stage III, and shows certain characteristics of invasion and metastasis. Stage II laryngeal cancer generally tends to metastasize via the lymphatic pathways, and some patients may also experience hematogenous pathway metastasis. Clinically, patients with Stage II laryngeal cancer may present with symptoms localized to the larynx as well as symptoms of metastatic sites. Patients may experience symptoms such as hoarseness, cough, expectoration, and a foreign body sensation in the throat. When metastasis occurs, respiratory symptoms like coughing and coughing up blood can appear.

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Written by Li Rui
Otolaryngology
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Dietary considerations for laryngeal cancer

Patients with throat cancer need to pay attention to the following aspects in their diet: First, it is recommended to adhere to a light diet, avoiding particularly greasy foods and opting for high-protein, low-fat foods. Second, it is recommended to eat soft or semi-liquid foods, and avoid particularly hard foods, as hard foods may cause swallowing obstructions and potentially damage the mucous membranes of the throat. Third, it is advised not to eat cured products and to reduce the intake of salty foods, as these foods may exacerbate the condition of throat cancer and potentially lead to cancer in other parts of the body.

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Written by Li Rui
Otolaryngology
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How to diagnose throat cancer

Laryngeal cancer examinations are mainly divided into two categories. The first category is laryngoscopy, and the second is imaging studies. Laryngoscopy is further subdivided into fiberoptic laryngoscopy, electronic laryngoscopy, and indirect laryngoscopy. Indirect laryngoscopy is relatively rudimentary and generally doesn't play a significant role in diagnosing laryngeal cancer. Therefore, fiberoptic or electronic laryngoscopy is typically preferred as these methods can directly determine the presence of neoplasms in the throat. If a neoplasm is detected, further pathological biopsy testing can be considered. The other method is imaging studies, primarily involving CT scans or MRI of the throat. These are helpful in determining the size, extent, and preliminary nature of the throat neoplasms. Combined with the above methods, a definitive diagnosis can generally be established.

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Written by Deng Bang Yu
Otolaryngology
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Common sites of laryngeal cancer

Laryngeal cancer is a malignant tumor in the larynx, and clinically, it is primarily squamous cell carcinoma. There are several types of laryngeal cancer: firstly, glottic cancer; secondly, supraglottic cancer; there is also subglottic cancer, and transglottic cancer that spans two regions. Among these types, glottic cancer is the most common. Early-stage glottic cancer is generally detected earlier due to hoarseness, and the outcomes after surgery are relatively better. Consequently, the most frequently diagnosed site of this disease is the vocal cords. After surgery, regular follow-up appointments are necessary to monitor and observe the healing process post-operation.

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Written by Li Rui
Otolaryngology
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The Difference Between Throat Cancer and Esophageal Cancer

Throat cancer and esophageal cancer have essential differences, starting with the specific location of the disease. Throat cancer primarily occurs in the glottis and the supraglottic area, while esophageal cancer mainly occurs in the esophagus. Typically, the symptoms of throat cancer may be more characteristic, the most common being a foreign body sensation in the throat, throat pain, and hoarseness. Particularly, glottic throat cancer symptoms are more pronounced, which might include persistent and noticeable hoarseness. The primary symptoms of esophageal cancer are pain below the neck, which may be accompanied by difficulty swallowing or swallowing obstruction. For diagnosis, throat cancer is primarily assessed via laryngoscopy, while esophageal cancer is typically evaluated through gastroscopy. In terms of treatment, the approach generally focuses on surgery, potentially supplemented by radiotherapy and chemotherapy.